Csharp/C Sharp by API/System.Windows.Forms/Form

extends Form

    
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class RendereringOrigin : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public RendereringOrigin()
  {
    InitializeComponent();
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(408, 273);
    this.Name = "RendereringOrigin";
    this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
    this.Text = "GDI+ Coordinate";
    this.Resize += new System.EventHandler(this.OnResize);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.OnPaint);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new RendereringOrigin());
  }
  protected void OnPaint (object sender, System.Windows.Forms.PaintEventArgs e)
  {
      GraphicsUnit gUnit = GraphicsUnit.Pixel;
      Point renderingOrgPt = new Point(0,0);
    renderingOrgPt.X = 100;
    renderingOrgPt.Y = 100;
    Graphics g = e.Graphics;
    g.SmoothingMode = SmoothingMode.AntiAlias;
    g.PageUnit = gUnit;
    g.TranslateTransform(renderingOrgPt.X,renderingOrgPt.Y);
    g.DrawRectangle(new Pen(Color.Red, 1), 0, 0, 100, 100);
  
    this.Text = string.Format("PageUnit: {0}, Origin: {1}",  gUnit, renderingOrgPt.ToString());
  }
  protected void OnResize (object sender, System.EventArgs e)
  {
    Invalidate();
  }
}

Form.AcceptButton

   
using System;
using System.Drawing;
using System.Windows.Forms;
public class EnterPrice : Form {
  private Button enter = new Button();
  private Label answer = new Label();
  private TextBox text = new TextBox( );
  public EnterPrice( ) {
    enter.Text = "Enter Price";
    text.Text = "";
    answer.Text = "";
    Size = new Size(300,200);
    answer.Size = new Size(200,50);
    enter.Location = new Point(30 + enter.Width, 30);
    text.Location = new Point (40 + enter.Width + enter.Width, 30);
    answer.Location = new Point(20, 60);
    AcceptButton = enter;
    Controls.Add(text);
    Controls.Add(answer);
    Controls.Add(enter);
    enter.Click += new EventHandler(Enter_Click);
  }
  protected void Enter_Click(Object sender, EventArgs e) {
    try{
    Console.WriteLine(Double.Parse(text.Text));
    }catch(Exception){
    }
    text.Text = "";
    text.Focus();
  }
  static void Main() {
    Application.Run(new EnterPrice());
  }
}

Form.Activated

  

using System;
using System.Windows.Forms;
using System.ruponentModel;
public class MainWindow : Form {
    private string lifeTimeInfo;
    public MainWindow() {
        this.Closing += new CancelEventHandler(MainForm_Closing);
        this.Load += new EventHandler(MainForm_Load);
        this.Closed += new EventHandler(MainForm_Closed);
        this.Activated += new EventHandler(MainForm_Activated);
        this.Deactivate += new EventHandler(MainForm_Deactivate);
    }
    protected void MainForm_Closing(object sender, CancelEventArgs e) {
        DialogResult dr = MessageBox.Show("Do you REALLY want to close this app?",
             "Closing event!", MessageBoxButtons.YesNo);
        if (dr == DialogResult.No)
            e.Cancel = true;
        else
            e.Cancel = false;
    }
    protected void MainForm_Load(object sender, System.EventArgs e) { 
        lifeTimeInfo += "Load event\n"; 
    }
    protected void MainForm_Activated(object sender, System.EventArgs e) { 
        lifeTimeInfo += "Activate event\n"; 
    }
    protected void MainForm_Deactivate(object sender, System.EventArgs e) { 
        lifeTimeInfo += "Deactivate event\n"; 
    }
    protected void MainForm_Closed(object sender, System.EventArgs e) {
        lifeTimeInfo += "Closed event\n";
        MessageBox.Show(lifeTimeInfo);
    }
    public static void Main(string[] args) {
        Application.Run(new MainWindow());
    }
}

Form.ActiveForm.Location

  
using System;
using System.Drawing;
using System.Windows.Forms;
   
class BetterDialog: Form
{
     public static void Main()
     {
          Application.Run(new BetterDialog());
     }
     public BetterDialog()
     {
          Menu = new MainMenu();
          Menu.MenuItems.Add("&Dialog!", new EventHandler(MenuOnClick));
     }
     void MenuOnClick(object obj, EventArgs ea)
     {
          BetterDialogBox dlg = new BetterDialogBox();
          DialogResult    dr  = dlg.ShowDialog();
   
          Console.WriteLine(dr);
     }
}
class BetterDialogBox: Form
{
     public BetterDialogBox()
     {
          Text = "Better Dialog Box";
   
          FormBorderStyle = FormBorderStyle.FixedDialog;
          ControlBox      = false;
          MaximizeBox     = false;
          MinimizeBox     = false;
          ShowInTaskbar   = false;
          StartPosition   = FormStartPosition.Manual;
          Location        = ActiveForm.Location + 
                            SystemInformation.CaptionButtonSize +
                            SystemInformation.FrameBorderSize;
   
          Button btn = new Button();
          btn.Parent   = this;
          btn.Text     = "OK";
          btn.Location = new Point(50, 50);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.OK;
   
          AcceptButton = btn;
   
          btn = new Button();
          btn.Parent   = this;
          btn.Text     = "Cancel";
          btn.Location = new Point(50, 100);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.Cancel;
   
          CancelButton = btn;
     }
}

Form.AddOwnedForm

   
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class ChildForm : Form
{
  public System.Windows.Forms.Label lblState;
  public ChildForm()
  {
    InitializeComponent();
  }
  private void InitializeComponent()
  {
    this.lblState = new System.Windows.Forms.Label();
    this.SuspendLayout();
    // 
    // lblState
    // 
    this.lblState.Location = new System.Drawing.Point(26, 24);
    this.lblState.Name = "lblState";
    this.lblState.Size = new System.Drawing.Size(184, 56);
    this.lblState.TabIndex = 2;
    // 
    // ChildForm
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.ClientSize = new System.Drawing.Size(236, 104);
    this.Controls.Add(this.lblState);
    this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Name = "ChildForm";
    this.Text = "ChildForm";
    this.ResumeLayout(false);
  }
  
}
public class ParentForm : Form{
  private System.Windows.Forms.Button cmdReleaseOwnership;
  private System.Windows.Forms.Button cmdAddOwnership;
  public ParentForm()
  {
    InitializeComponent();
    frmOwned.Show();
  }
  private ChildForm frmOwned = new ChildForm();

  private void cmdAddOwnership_Click(object sender, System.EventArgs e)
  {
    this.AddOwnedForm(frmOwned);
    frmOwned.lblState.Text = "Owned. Minimize me to see the difference.";
  }
  private void cmdReleaseOwnership_Click(object sender, System.EventArgs e)
  {
    this.RemoveOwnedForm(frmOwned);
    frmOwned.lblState.Text = "Not owned! Minimize me to see the difference.";
  }
  private void InitializeComponent()
  {
    this.cmdReleaseOwnership = new System.Windows.Forms.Button();
    this.cmdAddOwnership = new System.Windows.Forms.Button();
    this.SuspendLayout();
    // 
    // cmdReleaseOwnership
    // 
    this.cmdReleaseOwnership.FlatStyle = System.Windows.Forms.FlatStyle.System;
    this.cmdReleaseOwnership.Location = new System.Drawing.Point(150, 197);
    this.cmdReleaseOwnership.Name = "cmdReleaseOwnership";
    this.cmdReleaseOwnership.Size = new System.Drawing.Size(128, 32);
    this.cmdReleaseOwnership.TabIndex = 6;
    this.cmdReleaseOwnership.Text = "Remove Ownership";
    this.cmdReleaseOwnership.Click += new System.EventHandler(this.cmdReleaseOwnership_Click);
    // 
    // cmdAddOwnership
    // 
    this.cmdAddOwnership.FlatStyle = System.Windows.Forms.FlatStyle.System;
    this.cmdAddOwnership.Location = new System.Drawing.Point(14, 197);
    this.cmdAddOwnership.Name = "cmdAddOwnership";
    this.cmdAddOwnership.Size = new System.Drawing.Size(120, 32);
    this.cmdAddOwnership.TabIndex = 5;
    this.cmdAddOwnership.Text = "Set Ownership";
    this.cmdAddOwnership.Click += new System.EventHandler(this.cmdAddOwnership_Click);
    // 
    // ParentForm
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.ClientSize = new System.Drawing.Size(292, 266);
    this.Controls.Add(this.cmdReleaseOwnership);
    this.Controls.Add(this.cmdAddOwnership);
    this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Name = "ParentForm";
    this.Text = "Owner";
//    this.Load += new System.EventHandler(this.ParentForm_Load);
    this.ResumeLayout(false);
  }
  [STAThread]
  static void Main()
  {
    Application.EnableVisualStyles();
    Application.Run(new ParentForm());
  }
}

Form.AutoScaleBaseSize

   
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class SetFormCaption : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components;
  public SetFormCaption()
  {
    InitializeComponent();
    Text = "www.nfex.ru";    
  }
  private void InitializeComponent()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(292, 273);
    this.Text = "DataGridExample";
    this.Resize += new System.EventHandler(this.SetFormCaption_Resize);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.SetFormCaption_Paint);
    }
  [STAThread]
  static void Main() 
  {
    Application.Run(new SetFormCaption());
  }
  private void SetFormCaption_Resize(object sender, System.EventArgs e)
  {
    Invalidate();
    Console.WriteLine("Resize");
  }
  private void SetFormCaption_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    g.DrawString("Text", 
      new Font("Times New Roman", 20), 
      new SolidBrush(Color.Black), 
      this.DisplayRectangle);    
  }
}

Form.AutoScroll

   
  using System;
  using System.Drawing;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  public class Form1 : System.Windows.Forms.Form
  {
    private System.Windows.Forms.Label label1;
    private System.ruponentModel.Container components;
  
    public Form1()
    {
      InitializeComponent();
    }
    protected override void Dispose( bool disposing )
    {
      if( disposing )
      {
        if (components != null) 
        {
          components.Dispose();
        }
      }
      base.Dispose( disposing );
    }
    private void InitializeComponent()
    {
      this.label1 = new System.Windows.Forms.Label();
      this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 24F);
      this.label1.Location = new System.Drawing.Point(16, 16);
      this.label1.Size = new System.Drawing.Size(376, 224);
      this.label1.TabIndex = 0;
      this.label1.Text = "Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text ";
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.AutoScroll = true;
      this.AutoScrollMinSize = new System.Drawing.Size(300, 300);
      this.ClientSize = new System.Drawing.Size(403, 256);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {this.label1});
      this.Text = "Form1";
    }
    [STAThread]
    static void Main() 
    {
      Application.Run(new Form1());
    }
  }

Form.AutoScrollMinSize

    
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class ScrollForm : System.Windows.Forms.Form
{
  private System.Windows.Forms.Label label1;
  private System.ruponentModel.Container components = null;
  public ScrollForm()
  {
    this.label1 = new System.Windows.Forms.Label();
    this.SuspendLayout();
    this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 24F);
    this.label1.Location = new System.Drawing.Point(16, 16);
    this.label1.Name = "label1";
    this.label1.Size = new System.Drawing.Size(376, 224);
    this.label1.TabIndex = 0;
    this.label1.Text = "Scrollbars of course!";
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.AutoScroll = true;
    this.AutoScrollMinSize = new System.Drawing.Size(300, 300);
    this.ClientSize = new System.Drawing.Size(319, 136);
    this.Controls.Add(this.label1);
    this.Name = "ScrollForm";
    this.Text = "ScrollForm";
    this.ResumeLayout(false);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new ScrollForm());
  }
}

Form.BackColor

    
using System;
using System.Drawing;
using System.Windows.Forms;
class PaintHello
{
     public static void Main()
     {
          Form form      = new Form();
          form.Text      = "Paint Hello";
          form.BackColor = Color.White;
          form.Paint    += new PaintEventHandler(MyPaintHandler);
   
          Application.Run(form);
     }
     static void MyPaintHandler(object objSender, PaintEventArgs pea)
     {
          Form     form = (Form)objSender;
          Graphics graphics = pea.Graphics;
   
          graphics.DrawString("Hello, world!", form.Font, Brushes.Black, 0, 0);
     }
}

Form.CancelButton

  

using System;
using System.Drawing;
using System.Windows.Forms;
   
class AboutDialogBox: Form
{
     public static void Main()
     {
          AboutDialogBox dlg = new AboutDialogBox();
          dlg.ShowDialog();
     }    
     public AboutDialogBox()
     {
          Text = "About AboutBox";
   
          StartPosition   = FormStartPosition.CenterParent;
          FormBorderStyle = FormBorderStyle.FixedDialog;
          ControlBox      = false;
          MaximizeBox     = false;
          MinimizeBox     = false;
          ShowInTaskbar   = false;
   
          Label label1     = new Label();
          label1.Parent    = this;
          label1.Text      = " AboutBox Version 1.0 ";
          label1.Font      = new Font(FontFamily.GenericSerif, 24, 
                                      FontStyle.Italic);
          label1.AutoSize  = true;
          label1.TextAlign = ContentAlignment.MiddleCenter;
   
          Icon icon = new Icon(GetType(), "AboutBox.ico");
   
          PictureBox picbox = new PictureBox();
          picbox.Parent     = this;
          picbox.Image      = icon.ToBitmap();
          picbox.SizeMode   = PictureBoxSizeMode.AutoSize;
          picbox.Location   = new Point(label1.Font.Height / 2, 
                                        label1.Font.Height / 2);
   
          label1.Location  = new Point(picbox.Right,label1.Font.Height / 2);
   
          int iClientWidth = label1.Right;
   
          Label label2     = new Label();
          label2.Parent    = this;
          label2.Text      = "\x00A9 ";
          label2.Font      = new Font(FontFamily.GenericSerif, 16);
          label2.Location  = new Point(0, label1.Bottom + 
                                          label2.Font.Height);
          label2.Size      = new Size(iClientWidth, label2.Font.Height);
          label2.TextAlign = ContentAlignment.MiddleCenter;
   
          Button button   = new Button();
          button.Parent   = this;
          button.Text     = "OK";
          button.Size     = new Size(4 * button.Font.Height, 
                                     2 * button.Font.Height);
          button.Location = new Point((iClientWidth - button.Size.Width) / 2,
                                   label2.Bottom + 2 * button.Font.Height);
   
          button.DialogResult = DialogResult.OK;
   
          CancelButton = button;
          AcceptButton = button;
   
          ClientSize = new Size(iClientWidth, 
                                button.Bottom + 2 * button.Font.Height);
     }
}

Form.CenterToScreen()

  
  using System;
  using System.Drawing;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  public class Form1 : System.Windows.Forms.Form
  {
    private Button myButton; 
    public Form1()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
        
            this.Closing+=new CancelEventHandler(Form_Closing);

      myButton = new Button();
      myButton.Text = "www.nfex.ru";
      myButton.Location = new System.Drawing.Point(64, 32);
      myButton.Size = new System.Drawing.Size(150, 50);
      Controls.Add(myButton);
      CenterToScreen();
    }
        public void Form_Closing(object sender,CancelEventArgs cArgs) {
            if(sender==this){
               MessageBox.Show("Form Closing Event....");
               if(sender!=this) {
                 cArgs.Cancel=true;  
               }
            }   
        }
    static void Main() 
    {
      Application.Run(new Form1());
    }
  }

Form.ClientRectangle

    

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
    protected override void OnPaint(PaintEventArgs e) {
    Graphics g = e.Graphics;
    g.SmoothingMode = SmoothingMode.AntiAlias;
    g.FillRectangle(Brushes.White, this.ClientRectangle);
    Pen p = new Pen(Color.Black, 10);
    p.StartCap = LineCap.Round;
    p.EndCap = LineCap.ArrowAnchor;
    g.DrawLine(p, 30, 30, 80, 30);
    p.Dispose();
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}

Form.ClientSize

    
using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
   
class PrintableForm: Form
{
     public static void Main()
     {
          Application.Run(new PrintableForm());
     }
     public PrintableForm()
     {
          ResizeRedraw = true;
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          Point[] apt = {new Point(0,      0),
                         new Point(cx - 1, 0),
                         new Point(cx - 1, cy - 1),
                         new Point(0,      cy - 1),
                         new Point(0,      0)};
   
          grfx.DrawLines(new Pen(clr), apt);
     }
}

Form.Closed

    
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormLifeTimeEvent : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormLifeTimeEvent()
  {
    InitializeComponent();
    this.Closing += new System.ruponentModel.CancelEventHandler(this.FormLifeTimeEvent_Closing);
    this.Load += new System.EventHandler(this.FormLifeTimeEvent_Load);
    this.Closed += new System.EventHandler(this.FormLifeTimeEvent_Closed);
    this.Activated += new System.EventHandler(this.FormLifeTimeEvent_Activated);
    this.Deactivate += new System.EventHandler(this.FormLifeTimeEvent_Deactivate);
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(280, 177);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormLifeTimeEvent());
  }
  private void FormLifeTimeEvent_Closing(object sender, System.ruponentModel.CancelEventArgs e)
  {
    Console.WriteLine("Closing event");
  }
  private void FormLifeTimeEvent_Load(object sender, System.EventArgs e) { 
      Console.WriteLine("Load event"); 
  }
  private void FormLifeTimeEvent_Activated(object sender, System.EventArgs e) { 
      Console.WriteLine("Activate event"); 
  }
  private void FormLifeTimeEvent_Deactivate(object sender, System.EventArgs e) { 
      Console.WriteLine("Deactivate event"); 
  }
  
  private void FormLifeTimeEvent_Closed(object sender, System.EventArgs e) { 
      Console.WriteLine("Closed event"); 
  }
}

Form.Closing

    

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormClosingEventCancle : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormClosingEventCancle()
  {
    InitializeComponent();
    this.Closing += new System.ruponentModel.CancelEventHandler(this.FormClosingEventCancle_Closing);
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(280, 177);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormClosingEventCancle());
  }
  private void FormClosingEventCancle_Closing(object sender, System.ruponentModel.CancelEventArgs e)
  {
    DialogResult dr = MessageBox.Show("Do you REALLY want to close this app?",
      "Closing event!", MessageBoxButtons.YesNo);
    if(dr == DialogResult.No)
      e.Cancel = true;
    else
      e.Cancel = false;    
  }
}

Form.ContextMenu

 
using System;
using System.Drawing;
using System.Windows.Forms;
   
class ContextMenuDemo: Form
{
     MenuItem miColor;
   
     public static void Main()
     {
          Application.Run(new ContextMenuDemo());
     }
     public ContextMenuDemo()
     {
          EventHandler eh = new EventHandler(MenuColorOnClick);
   
          MenuItem[] ami = { new MenuItem("Black",   eh),
                             new MenuItem("Blue",    eh),
                             new MenuItem("Green",   eh),
                             new MenuItem("White",   eh) };
   
          foreach (MenuItem mi in ami)
               mi.RadioCheck = true;
   
          miColor = ami[3];
          miColor.Checked = true;
          BackColor = Color.FromName(miColor.Text);
   
          ContextMenu = new ContextMenu(ami);
     }
     void MenuColorOnClick(object obj, EventArgs ea)
     {
          miColor.Checked = false;
          miColor = (MenuItem) obj;
          miColor.Checked = true;
   
          BackColor = Color.FromName(miColor.Text);
     }
}

Form.ControlBox

  

using System;
using System.Drawing;
using System.Windows.Forms;
   
class BetterDialog: Form
{
     public static void Main()
     {
          Application.Run(new BetterDialog());
     }
     public BetterDialog()
     {
          Menu = new MainMenu();
          Menu.MenuItems.Add("&Dialog!", new EventHandler(MenuOnClick));
     }
     void MenuOnClick(object obj, EventArgs ea)
     {
          BetterDialogBox dlg = new BetterDialogBox();
          DialogResult    dr  = dlg.ShowDialog();
   
          Console.WriteLine(dr);
     }
}
class BetterDialogBox: Form
{
     public BetterDialogBox()
     {
          Text = "Better Dialog Box";
   
          FormBorderStyle = FormBorderStyle.FixedDialog;
          ControlBox      = false;
          MaximizeBox     = false;
          MinimizeBox     = false;
          ShowInTaskbar   = false;
          StartPosition   = FormStartPosition.Manual;
          Location        = ActiveForm.Location + 
                            SystemInformation.CaptionButtonSize +
                            SystemInformation.FrameBorderSize;
   
          Button btn = new Button();
          btn.Parent   = this;
          btn.Text     = "OK";
          btn.Location = new Point(50, 50);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.OK;
   
          AcceptButton = btn;
   
          btn = new Button();
          btn.Parent   = this;
          btn.Text     = "Cancel";
          btn.Location = new Point(50, 100);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.Cancel;
   
          CancelButton = btn;
     }
}

Form.Controls

    
using System; 
using System.Windows.Forms; 
using System.Drawing; 
 
class FormExit : Form { 
  Button StopButton; 
 
  public FormExit() { 
    Text = "Adding a Stop Button"; 
 
    StopButton = new Button(); 
    StopButton.Text = "Stop"; 
    StopButton.Location = new Point(100, 100); 
 
    StopButton.Click += StopButtonClick; 
    Controls.Add(StopButton); 
  }   
 
  [STAThread] 
  public static void Main() { 
    FormExit skel = new FormExit(); 
 
    Application.Run(skel); 
  } 
 
  protected void StopButtonClick(object who, EventArgs e) { 
     Application.Exit(); 
  } 
}

Form.Cursor

    
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormCursorSetting : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormCursorSetting()
  {
    InitializeComponent();
    Cursor = Cursors.WaitCursor;
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(292, 273);
    this.Text = "Form1";
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormCursorSetting());
  }
  private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    g.DrawString("String...", new Font("Times New Roman", 20), new SolidBrush(Color.Black), 40, 10);
  }
}

Form.DesktopBounds

   
using System;
using System.Drawing;
using System.Windows.Forms;
   
class FormSize: Form
{
     public static void Main()
     {
          Application.Run(new FormSize());
     }
     public FormSize()
     {
          BackColor = Color.White;
     }
     protected override void OnMove(EventArgs ea)
     {
          Invalidate();
     }
     protected override void OnResize(EventArgs ea)
     {
          Invalidate();
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          Graphics graphics = pea.Graphics;
          string   str  = "Location: "        + Location        + "\n"   +
                          "Size: "            + Size            + "\n"   +
                          "Bounds: "          + Bounds          + "\n"   +
                          "Width: "           + Width           + "\n"   +
                          "Height: "          + Height          + "\n"   +
                          "Left: "            + Left            + "\n"   +
                          "Top: "             + Top             + "\n"   +
                          "Right: "           + Right           + "\n"   +
                          "Bottom: "          + Bottom          + "\n\n" +
                          "DesktopLocation: " + DesktopLocation + "\n"   +
                          "DesktopBounds: "   + DesktopBounds   + "\n\n" +
                          "ClientSize: "      + ClientSize      + "\n"   +
                          "ClientRectangle: " + ClientRectangle;
   
          graphics.DrawString(str, Font, Brushes.Black, 0, 0);
    }
}

Form.DialogResult

   

using System;
using System.Drawing;
using System.Windows.Forms;
   
class SimpleDialog: Form
{
     public static void Main()
     {
          Application.Run(new SimpleDialog());
     }
     public SimpleDialog()
     {
   
          Menu = new MainMenu();
          Menu.MenuItems.Add("&Dialog!", new EventHandler(MenuOnClick));
     }
     void MenuOnClick(object obj, EventArgs ea)
     {
          SimpleDialogBox dlg = new SimpleDialogBox();
   
          dlg.ShowDialog();
   
          Console.WriteLine(dlg.DialogResult);
          
     }
}
class SimpleDialogBox: Form
{
     public SimpleDialogBox()
     {
          Text = "Simple Dialog Box";
   
          FormBorderStyle = FormBorderStyle.FixedDialog;
          ControlBox      = false;
          MaximizeBox     = false;
          MinimizeBox     = false;
          ShowInTaskbar   = false;
   
          Button btn = new Button();
          btn.Parent   = this;
          btn.Text     = "OK";
          btn.Location = new Point(50, 50);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.Click   += new EventHandler(ButtonOkOnClick);
   
          btn = new Button();
          btn.Parent   = this;
          btn.Text     = "Cancel";
          btn.Location = new Point(50, 100);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.Click   += new EventHandler(ButtonCancelOnClick);
     }
     void ButtonOkOnClick(object obj, EventArgs ea)
     {
          DialogResult = DialogResult.OK;
     }
     void ButtonCancelOnClick(object obj, EventArgs ea)
     {
          DialogResult = DialogResult.Cancel;
     }
}

Form.DisplayRectangle

   

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class CenterForm : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components;
  public CenterForm()
  {
    InitializeComponent();
    CenterToScreen();
  }

  private void InitializeComponent()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(292, 273);
    this.Text = "DataGridExample";
    this.Resize += new System.EventHandler(this.CenterForm_Resize);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.CenterForm_Paint);
    }
  [STAThread]
  static void Main() 
  {
    Application.Run(new CenterForm());
  }
  private void CenterForm_Resize(object sender, System.EventArgs e)
  {
    Invalidate();
    Console.WriteLine("Resize");
  }
  private void CenterForm_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    g.DrawString("Text", 
      new Font("Times New Roman", 20), 
      new SolidBrush(Color.Black), 
      this.DisplayRectangle);    
  }
}

Form.Dispose

    

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormDispose : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormDispose()
  {
    InitializeComponent();
  }
  protected override void Dispose( bool disposing )
  {
    MessageBox.Show("Disposing this Form");
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );    
  }
  private void InitializeComponent()
  {
    this.ruponents = new System.ruponentModel.Container();
    this.Size = new System.Drawing.Size(300,300);
    this.Text = "Form1";
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormDispose());
  }
}

Form.ForeColor

    
using System;
using System.Windows.Forms;
using System.Drawing;
public class ButtonClickEvent : System.Windows.Forms.Form
{
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.TextBox textBox1;
  public ButtonClickEvent()
  {
    Text = "Test WinForm";
    ForeColor = System.Drawing.Color.Yellow;
    button1 = new System.Windows.Forms.Button();
    textBox1 = new System.Windows.Forms.TextBox();
    // button control and its properties
    button1.Location = new System.Drawing.Point(8, 32);
    button1.Name = "button1";
    button1.Size = new System.Drawing.Size(104, 32);
    button1.TabIndex = 0;
    button1.Text = "Click Me";
        
    // text box control and its properties
    textBox1.Location = new System.Drawing.Point(24, 104);
    textBox1.Name = "textBox1";
    textBox1.Size = new System.Drawing.Size(184, 20);
    textBox1.TabIndex = 1;
    textBox1.Text = "textBox1";
        
    // Adding controls to the fomr
    Controls.AddRange(new System.Windows.Forms.Control[]{textBox1, button1} );
    button1.Click += new System.EventHandler(button1_Click);
                    
  }
  private void button1_Click(object sender,System.EventArgs e)
  {
    textBox1.Text = "Button is clicked";
    MessageBox.Show("Button is clicked");
  }
  public static int Main()
  {
    Application.Run(new ButtonClickEvent());
    return 0;
  }       
}

Form.FormBorderStyle

   
using System;
using System.Drawing;
using System.Windows.Forms;
   
class AutoScaleDemo: Form
{
     public static void Main()
     {
          Application.Run(new AutoScaleDemo());
     }
     public AutoScaleDemo()
     {
          Font = new Font("Arial", 12);
          FormBorderStyle = FormBorderStyle.FixedSingle;
   
          int[] aiPointSize = { 8, 12, 16, 24, 32 };
   
          for (int i = 0; i < aiPointSize.Length; i++)
          {
               Button btn    = new Button();
               btn.Parent    = this;
               btn.Text      = "Use " + aiPointSize[i] + "-point font";
               btn.Tag       = aiPointSize[i];
               btn.Location  = new Point(4, 16 + 24 * i);
               btn.Size      = new Size(80, 16);
               btn.Click    += new EventHandler(ButtonOnClick);
          }
          ClientSize = new Size(88, 16 + 24 * aiPointSize.Length);
          AutoScaleBaseSize = new Size(4, 8);
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          pea.Graphics.DrawString(Text, Font, new SolidBrush(ForeColor), 0, 0);
     }
     void ButtonOnClick(object obj, EventArgs ea)
     {
          Button btn = (Button) obj;
   
          SizeF sizefOld = GetAutoScaleSize(Font);
          Font = new Font(Font.FontFamily, (int) btn.Tag);
          SizeF sizefNew = GetAutoScaleSize(Font);
   
          Scale(sizefNew.Width  / sizefOld.Width,sizefNew.Height / sizefOld.Height);
     }
}

Form.GotFocus

  
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FocusForm : System.Windows.Forms.Form {
    private System.Windows.Forms.TextBox txtFocusForm;
    private System.Windows.Forms.Button btFocusForm;
    public FocusForm() {
        this.txtFocusForm = new System.Windows.Forms.TextBox();
        this.btFocusForm = new System.Windows.Forms.Button();
        this.SuspendLayout();
        this.txtFocusForm.Location = new System.Drawing.Point(8, 8);
        this.txtFocusForm.Size = new System.Drawing.Size(336, 20);
        this.txtFocusForm.LostFocus += new System.EventHandler(this.txtFocusForm_LostFocus);
        this.txtFocusForm.GotFocus += new System.EventHandler(this.txtFocusForm_GotFocus);
        this.btFocusForm.Location = new System.Drawing.Point(8, 40);
        this.btFocusForm.Size = new System.Drawing.Size(336, 23);
        this.btFocusForm.Click += new System.EventHandler(this.btFocusForm_Click);
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(352, 70);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                      this.btFocusForm,
                                      this.txtFocusForm});
        this.ResumeLayout(false);
    }
    [STAThread]
    static void Main() {
        Application.Run(new FocusForm());
    }
    protected void txtFocusForm_LostFocus(object sender, EventArgs e) {
        Console.WriteLine("Goodbye!");
    }
    protected void txtFocusForm_GotFocus(object sender, EventArgs e) {
        Console.WriteLine("Hello!");
    }
    private void btFocusForm_Click(object sender, System.EventArgs e) {
        bool canFocus = txtFocusForm.CanFocus;
        bool containsFocus = this.ContainsFocus;
        bool focused = txtFocusForm.Focused;
        Console.WriteLine("Textbox can focus: " + canFocus +
                     "\nForm children contain focus: " + containsFocus +
                     "\nTextbox has focus: " + focused);
        txtFocusForm.Focus();
    }
}

Form.Height

   
using System.Drawing;
using System.Windows.Forms;
   
class FormProperties
{
     public static void Main()
     {
          Form form = new Form();
   
          form.Height         /= 2;
   
          Application.Run(form);
     }
}

Form.Hide()

   
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
  public class Form2 : Form
  {
    private System.Windows.Forms.Button Button3;
    private System.Windows.Forms.Button Button2;
    private System.Windows.Forms.Button Button1;
      
      
    public Form2()
    {
      InitializeComponent();
    }
    private void InitializeComponent()
    {
      this.Button3 = new System.Windows.Forms.Button();
      this.Button2 = new System.Windows.Forms.Button();
      this.Button1 = new System.Windows.Forms.Button();
      this.SuspendLayout();
      // 
      // Button3
      // 
      this.Button3.Location = new System.Drawing.Point(120, 56);
      this.Button3.Name = "Button3";
      this.Button3.Size = new System.Drawing.Size(88, 32);
      this.Button3.TabIndex = 8;
      this.Button3.Text = "Become Child of Parent2";
      this.Button3.Click += new System.EventHandler(this.Button3_Click);
      // 
      // Button2
      // 
      this.Button2.Location = new System.Drawing.Point(12, 56);
      this.Button2.Name = "Button2";
      this.Button2.Size = new System.Drawing.Size(88, 32);
      this.Button2.TabIndex = 7;
      this.Button2.Text = "Become Child of Parent1";
      this.Button2.Click += new System.EventHandler(this.Button2_Click);
      // 
      // Button1
      // 
      this.Button1.Location = new System.Drawing.Point(12, 12);
      this.Button1.Name = "Button1";
      this.Button1.Size = new System.Drawing.Size(88, 32);
      this.Button1.TabIndex = 6;
      this.Button1.Text = "Become Parent";
      this.Button1.Click += new System.EventHandler(this.Button1_Click);
      // 
      // Form2
      // 
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
      this.ClientSize = new System.Drawing.Size(292, 154);
      this.Controls.Add(this.Button3);
      this.Controls.Add(this.Button2);
      this.Controls.Add(this.Button1);
      this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
      this.Name = "Form2";
      this.Text = "Form2";
      this.ResumeLayout(false);
    }
    private void Button1_Click(object sender, System.EventArgs e)
    {
      this.Hide();
      this.MdiParent = null;
      this.IsMdiContainer = true;
      this.Show();
    }
    private void Button2_Click(object sender, System.EventArgs e)
    {
      this.Hide();
      this.IsMdiContainer = false;
      this.MdiParent = Program.Main2;
      this.Show();
    }
    private void Button3_Click(object sender, System.EventArgs e)
    {
      this.Hide();
      this.IsMdiContainer = false;
      this.MdiParent = Program.Main1;
      this.Show();
    }
  }
  public class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }
    private void Form1_FormClosed(object sender, FormClosedEventArgs e)
    {
      Application.Exit();
    }
    private void InitializeComponent()
    {
      this.SuspendLayout();
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
      this.ClientSize = new System.Drawing.Size(422, 351);
      this.IsMdiContainer = true;
      this.Name = "Form1";
      this.Text = "Form1";
      this.FormClosed += new System.Windows.Forms.FormClosedEventHandler(this.Form1_FormClosed);
      this.ResumeLayout(false);
    }
  }
  static class Program
  {
    public static Form1 Main1 = new Form1();
    public static Form1 Main2 = new Form1();
    public static Form2 Child = new Form2();
    [STAThread]
    public static void Main()
    {
      Application.EnableVisualStyles();
      Main1.Text = "Parent 2";
      Main2.Text = "Parent 1";
      Main1.Show();
      Main2.Show();
      Child.MdiParent = Main2;
      Child.Show();
      System.Windows.Forms.Application.Run();
    }
  }

Form.Invalidate

   
using System;
using System.Drawing;
using System.Windows.Forms;
public class PaintInvalidate : Form
{
  private Button btn;
  public PaintInvalidate()
  {
    Size = new Size(300,200);
    btn = new Button();
    btn.Parent = this;
    btn.Location = new Point(25,25);
    btn.Text = "Update";
    btn.Click += new System.EventHandler(btn_Click);
  }
  static void Main() 
  {
    Application.Run(new PaintInvalidate());
  }
  protected override void OnPaint(PaintEventArgs e)
  {
    base.OnPaint(e);
    Graphics g = e.Graphics;
    String str = "\nThe time is " + DateTime.Now.ToLongTimeString();
    g.DrawString(str, Font, Brushes.Black, 50, 75);
  }
  private void btn_Click(object sender, EventArgs e)
  {
    Invalidate();
  }
}

Form.IsMdiContainer

   
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
  public class Form2 : Form
  {
    private System.Windows.Forms.Button Button3;
    private System.Windows.Forms.Button Button2;
    private System.Windows.Forms.Button Button1;
      
      
    public Form2()
    {
      InitializeComponent();
    }
    private void InitializeComponent()
    {
      this.Button3 = new System.Windows.Forms.Button();
      this.Button2 = new System.Windows.Forms.Button();
      this.Button1 = new System.Windows.Forms.Button();
      this.SuspendLayout();
      // 
      // Button3
      // 
      this.Button3.Location = new System.Drawing.Point(120, 56);
      this.Button3.Name = "Button3";
      this.Button3.Size = new System.Drawing.Size(88, 32);
      this.Button3.TabIndex = 8;
      this.Button3.Text = "Become Child of Parent2";
      this.Button3.Click += new System.EventHandler(this.Button3_Click);
      // 
      // Button2
      // 
      this.Button2.Location = new System.Drawing.Point(12, 56);
      this.Button2.Name = "Button2";
      this.Button2.Size = new System.Drawing.Size(88, 32);
      this.Button2.TabIndex = 7;
      this.Button2.Text = "Become Child of Parent1";
      this.Button2.Click += new System.EventHandler(this.Button2_Click);
      // 
      // Button1
      // 
      this.Button1.Location = new System.Drawing.Point(12, 12);
      this.Button1.Name = "Button1";
      this.Button1.Size = new System.Drawing.Size(88, 32);
      this.Button1.TabIndex = 6;
      this.Button1.Text = "Become Parent";
      this.Button1.Click += new System.EventHandler(this.Button1_Click);
      // 
      // Form2
      // 
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
      this.ClientSize = new System.Drawing.Size(292, 154);
      this.Controls.Add(this.Button3);
      this.Controls.Add(this.Button2);
      this.Controls.Add(this.Button1);
      this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
      this.Name = "Form2";
      this.Text = "Form2";
      this.ResumeLayout(false);
    }
    private void Button1_Click(object sender, System.EventArgs e)
    {
      this.Hide();
      this.MdiParent = null;
      this.IsMdiContainer = true;
      this.Show();
    }
    private void Button2_Click(object sender, System.EventArgs e)
    {
      this.Hide();
      this.IsMdiContainer = false;
      this.MdiParent = Program.Main2;
      this.Show();
    }
    private void Button3_Click(object sender, System.EventArgs e)
    {
      this.Hide();
      this.IsMdiContainer = false;
      this.MdiParent = Program.Main1;
      this.Show();
    }
  }
  public class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }
    private void Form1_FormClosed(object sender, FormClosedEventArgs e)
    {
      Application.Exit();
    }
    private void InitializeComponent()
    {
      this.SuspendLayout();
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
      this.ClientSize = new System.Drawing.Size(422, 351);
      this.IsMdiContainer = true;
      this.Name = "Form1";
      this.Text = "Form1";
      this.FormClosed += new System.Windows.Forms.FormClosedEventHandler(this.Form1_FormClosed);
      this.ResumeLayout(false);
    }
  }
  static class Program
  {
    public static Form1 Main1 = new Form1();
    public static Form1 Main2 = new Form1();
    public static Form2 Child = new Form2();
    [STAThread]
    public static void Main()
    {
      Application.EnableVisualStyles();
      Main1.Text = "Parent 2";
      Main2.Text = "Parent 1";
      Main1.Show();
      Main2.Show();
      Child.MdiParent = Main2;
      Child.Show();
      System.Windows.Forms.Application.Run();
    }
  }

Form.KeyPress

  
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class KeyReader : System.Windows.Forms.Form {
    private System.Windows.Forms.Label lblPress;
    private System.Windows.Forms.Label lblDown;
    private System.Windows.Forms.Label label1;
    public KeyReader() {
       InitializeComponent();
    }
     private void InitializeComponent() {
      this.lblPress = new System.Windows.Forms.Label();
      this.lblDown = new System.Windows.Forms.Label();
      this.label1 = new System.Windows.Forms.Label();
      this.SuspendLayout();
      this.lblPress.Font = new System.Drawing.Font("Microsoft Sans Serif", 30F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
      this.lblPress.Location = new System.Drawing.Point(8, 190);
      this.lblPress.Name = "lblPress";
      this.lblPress.Size = new System.Drawing.Size(408, 48);
      this.lblPress.TabIndex = 0;
      this.lblPress.Text = "Press:";
      this.lblPress.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
      this.lblDown.Font = new System.Drawing.Font("Microsoft Sans Serif", 30F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
      this.lblDown.Location = new System.Drawing.Point(8, 254);
      this.lblDown.Name = "lblDown";
      this.lblDown.Size = new System.Drawing.Size(408, 48);
      this.lblDown.TabIndex = 0;
      this.lblDown.Text = "Down:";
      this.lblDown.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;

      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(424, 365);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                  this.label1,
                                                                  this.lblDown,
                                                                  this.lblPress});
      this.KeyPreview = true;
      this.Name = "KeyReader";
      this.Text = "KeyReader";
      this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.KeyReader_KeyDown);
      this.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.KeyReader_KeyPress);
      this.ResumeLayout(false);
    }
    [STAThread]
    static void Main() {
       Application.Run(new KeyReader());
    }
    private void KeyReader_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e) {
      lblPress.Text =  "Press: " + Convert.ToString(e.KeyChar);
    }
    private void KeyReader_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) {
      lblDown.Text = "Down: " + Convert.ToString(e.KeyCode);
      if (e.KeyCode == Keys.ShiftKey){
         MessageBox.Show("That is one shifty character");
      }
    } 
}

Form.KeyPreview

   
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace KeyPress
{
    /// <summary>
    /// Summary description for KeyPress.
    /// </summary>
    public class KeyPress : System.Windows.Forms.Form
    {
    private System.Windows.Forms.Button button1;
    private System.Windows.Forms.Button button2;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ruponentModel.Container components = null;
        public KeyPress()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }
        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
      this.button1 = new System.Windows.Forms.Button();
      this.button2 = new System.Windows.Forms.Button();
      this.SuspendLayout();
      // 
      // button1
      // 
      this.button1.Location = new System.Drawing.Point(184, 104);
      this.button1.Name = "button1";
      this.button1.Size = new System.Drawing.Size(80, 48);
      this.button1.TabIndex = 0;
      this.button1.Text = "button1";
      // 
      // button2
      // 
      this.button2.Location = new System.Drawing.Point(176, 192);
      this.button2.Name = "button2";
      this.button2.Size = new System.Drawing.Size(80, 32);
      this.button2.TabIndex = 1;
      this.button2.Text = "button2";
      // 
      // KeyPress
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                  this.button2,
                                                                  this.button1});
      this.Name = "KeyPress";
      this.Text = "KeyPress";
      this.Load += new System.EventHandler(this.KeyPress_Load);
      this.ResumeLayout(false);
    }
        #endregion
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new KeyPress());
        }
    private void KeyPress_Load(object sender, System.EventArgs e)
    {
      this.KeyPreview=true;
    }
    protected override void OnKeyPress(KeyPressEventArgs e)
    {
      MessageBox.Show("Key Pressed = " + e.KeyChar.ToString());
    }
    }
}

Form.KeyUp

    
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormMouseKeyEvent : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormMouseKeyEvent()
  {
    this.KeyUp += new KeyEventHandler(OnKeyUp);
    InitializeComponent();
    CenterToScreen();
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );    
  }
  private void InitializeComponent()
  {
    this.ruponents = new System.ruponentModel.Container();
    this.Size = new System.Drawing.Size(300,300);
    this.Text = "Form1";
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormMouseKeyEvent());
  }
  public void OnKeyUp(object sender, KeyEventArgs e)
  {
    MessageBox.Show(e.KeyCode.ToString(), "Key Pressed!");
  }
}

Form.Load

  
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
public class ComboBoxes : Form
{
  ComboBox cmb;
  Button btnDisplay;
  Button btnInsert;
  Button btnSelect;
  Label lblEdit;
  TextBox txtDisplay;
  Boolean boolChange = false;
  Boolean boolProcessed = false;
  public ComboBoxes()
  {
    Size = new Size(300,400);
    this.Load += new EventHandler(this_Load);
    cmb = new ComboBox();
    cmb.Parent = this;
    cmb.Location = new Point(10,10);
    cmb.Size = new Size(ClientSize.Width / 2, Height - 200);
    cmb.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Bottom;
    cmb.DropDownStyle = ComboBoxStyle.DropDown;    
    cmb.DropDownStyle = ComboBoxStyle.Simple;
    cmb.DropDownWidth = (int)(cmb.Width * 1.5);
    cmb.MaxDropDownItems = 12;
    cmb.MaxLength = 20;
    cmb.SelectionChangeCommitted += new EventHandler(cmb_SelectionChangeCommitted);
    cmb.Leave += new EventHandler(cmb_Leave);
    btnInsert = new Button();
    btnInsert.Parent = this;
    btnInsert.Text = "&Insert Item";
    btnInsert.Size = new Size((int)(Font.Height * .75) * btnInsert.Text.Length, cmb.Height);
    btnInsert.Location = new Point(cmb.Right + 10, cmb.Top);
    btnInsert.Click += new System.EventHandler(btnInsert_Click);
    lblEdit = new Label();
    lblEdit.Parent = this;
    lblEdit.BorderStyle = BorderStyle.Fixed3D;
    lblEdit.Location = new Point(cmb.Left, cmb.Bottom + 10);
    lblEdit.BackColor = Color.LightGray;
    lblEdit.Text = "";
    lblEdit.Size = new Size(cmb.DropDownWidth, Font.Height * 2);
    btnDisplay = new Button();
    btnDisplay.Parent = this;
    btnDisplay.Text = "&Display Items";
    btnDisplay.Size = new Size((int)(Font.Height * .75) * btnDisplay.Text.Length, cmb.Height);
    btnDisplay.Location = new Point(lblEdit.Left, lblEdit.Bottom + 10);
    btnDisplay.Click += new System.EventHandler(btnDisplay_Click);
    txtDisplay = new TextBox();
    txtDisplay.Parent = this;
    txtDisplay.Location = new Point(btnDisplay.Left, btnDisplay.Bottom + 10);
    txtDisplay.Multiline = true;
    txtDisplay.ReadOnly = true;
    txtDisplay.BackColor = Color.LightGray;
    txtDisplay.ScrollBars = ScrollBars.Vertical;
    txtDisplay.Text = "";
    txtDisplay.Size = new Size(cmb.DropDownWidth, 200);
    
    btnSelect = new Button();
    btnSelect.Parent = this;
    btnSelect.Text = "&Select 4";
    btnSelect.Size = new Size((int)(Font.Height * .75) * btnSelect.Text.Length, cmb.Height);
    btnSelect.Location = new Point(btnDisplay.Right + 10, btnDisplay.Top);
    btnSelect.Click += new System.EventHandler(btnSelect_Click);
      cmb.Items.Add("A");
      cmb.Items.Add("B");
      cmb.Items.Add("C");
      cmb.Items.Add("D");
      cmb.Items.Add("E");                        
    cmb.SelectedIndex = 0;   
  }
  static void Main() 
  {
    Application.Run(new ComboBoxes());
  }
  private void this_Load(object sender, EventArgs e)
  {
    cmb.TextChanged += new EventHandler(cmb_TextChanged);
    cmb.SelectedIndexChanged += new EventHandler(cmb_SelectedIndexChanged);
  }
  private void cmb_TextChanged(object sender, EventArgs e)
  {
    if (!boolProcessed)
      lblEdit.Text = cmb.Text;
    boolChange = true;
  }    
  private void cmb_SelectedIndexChanged(object sender, EventArgs e)
  {
    if (boolChange)
    {
      boolChange = false;
      boolProcessed = false;
    }
  }
  private void cmb_SelectionChangeCommitted(object sender, EventArgs e)
  {
    if (boolChange)
      ProcessChange();
  }    
  private void cmb_Leave(object sender, EventArgs e)
  {
    if (boolChange)
    {
      ProcessChange();
      boolChange = false;
    }
  }    
  private void ProcessChange()
  {
    lblEdit.Text = "Edited: " + cmb.Text;
    boolProcessed = true;
  }
  private void btnDisplay_Click(object sender, EventArgs e)
  {
    string str = DateTime.Now.ToString() + "\r\n";
    foreach (object item in cmb.Items)
    {
      str += item.ToString() + "\r\n";
    }
    txtDisplay.Text = str;
  }    
  private void btnSelect_Click(object sender, EventArgs e)
  {
    cmb.Select(1,2);
  }    
  private void btnInsert_Click(object sender, EventArgs e)
  {
    if (cmb.FindStringExact(cmb.Text) != -1)
    {
      MessageBox.Show(""" + cmb.Text + "" already exists in the list.\r\n" + 
          "Will not be added again.",
          "Already Exists!");
    }
    else if (cmb.Text == "")
    {
      MessageBox.Show("There is nothing to add.","Nothing There");
    }
    else
    {
      cmb.Items.Add(cmb.Text);
    }
  }
}

Form.Location

    
using System;
using System.Drawing;
using System.Windows.Forms;
public class FormMoveDemo : Form
{
    private bool dragging;
    private Point pointClicked;
    public FormMoveDemo()
    {
        InitializeComponent();
    }
    private void lblDrag_MouseDown(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            dragging = true;
            pointClicked = new Point(e.X, e.Y);
        }
        else
        {
            dragging = false;
        }
    }
    private void lblDrag_MouseMove(object sender, MouseEventArgs e)
    {
        if (dragging){
            Point pointMoveTo;
            pointMoveTo = this.PointToScreen(new Point(e.X, e.Y));
            pointMoveTo.Offset(-pointClicked.X, -pointClicked.Y);
            this.Location = pointMoveTo;
        }   
    }
    private void lblDrag_MouseUp(object sender, MouseEventArgs e)
    {
        dragging = false;
    }
    private void cmdClose_Click(object sender, EventArgs e)
    {
        this.Close();
    }
    [STAThread]
    public static void Main(string[] args)
    {
        Application.Run(new FormMoveDemo());
    }
    private System.Windows.Forms.Button cmdClose= new System.Windows.Forms.Button();
    private System.Windows.Forms.Label lblDrag = new System.Windows.Forms.Label();
    private System.ruponentModel.IContainer components = null;
    private void InitializeComponent()
    {
        this.SuspendLayout();
        this.cmdClose.Location = new System.Drawing.Point(102, 215);
        this.cmdClose.Name = "cmdClose";
        this.cmdClose.Size = new System.Drawing.Size(76, 20);
        this.cmdClose.TabIndex = 5;
        this.cmdClose.Text = "Close";
        this.cmdClose.Click += new System.EventHandler(this.cmdClose_Click);
        this.lblDrag.BackColor = System.Drawing.Color.Navy;
        this.lblDrag.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
        this.lblDrag.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        this.lblDrag.ForeColor = System.Drawing.Color.White;
        this.lblDrag.Location = new System.Drawing.Point(94, 167);
        this.lblDrag.Name = "lblDrag";
        this.lblDrag.Size = new System.Drawing.Size(96, 36);
        this.lblDrag.TabIndex = 4;
        this.lblDrag.Text = "Click here to move the form!";
        this.lblDrag.MouseUp += new System.Windows.Forms.MouseEventHandler(this.lblDrag_MouseUp);
        this.lblDrag.MouseMove += new System.Windows.Forms.MouseEventHandler(this.lblDrag_MouseMove);
        this.lblDrag.MouseDown += new System.Windows.Forms.MouseEventHandler(this.lblDrag_MouseDown);
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(292, 266);
        this.ControlBox = false;
        this.Controls.Add(this.cmdClose);
        this.Controls.Add(this.lblDrag);
        this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
        this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
        this.MaximizeBox = false;
        this.MinimizeBox = false;
        this.ResumeLayout(false);
    }
   
}

Form.MaximizeBox

   
using System.Drawing;
using System.Windows.Forms;
   
class FormProperties
{
     public static void Main()
     {
          Form form = new Form();
   
          form.Text            = "Form Properties";
          form.BackColor       = Color.BlanchedAlmond;
          form.Width          *= 2;
          form.Height         /= 2;
   
          form.FormBorderStyle = FormBorderStyle.FixedSingle;
          form.MaximizeBox     = false;
          form.Cursor          = Cursors.Hand;
          form.StartPosition   = FormStartPosition.CenterScreen;
   
          Application.Run(form);
     }
}

Form.MaximumSize

 
  using System;
  using System.Drawing;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  public class Form1 : System.Windows.Forms.Form
  {
    private Button myButton; 
    public Form1()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
        
            this.MaximumSize=new Size(300,300);
            this.MinimumSize=new Size(300,300);
      myButton = new Button();
      myButton.Text = "www.nfex.ru";
      myButton.Location = new System.Drawing.Point(64, 32);
      myButton.Size = new System.Drawing.Size(150, 50);
      Controls.Add(myButton);
    }
    static void Main() 
    {
      Application.Run(new Form1());
    }
  }

Form.MdiParent

   
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace MdiBasic
{
  public class frmContainer : System.Windows.Forms.Form
  {
    private System.ruponentModel.Container components = null;
    public frmContainer()
    {
      InitializeComponent();
            MdiBasic.frmChild child = new MdiBasic.frmChild(this);
            child.Show();
        }
    private void InitializeComponent()
    {
         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
         this.ClientSize = new System.Drawing.Size(292, 273);
         this.IsMdiContainer = true;
         this.Name = "frmContainer";
         this.Text = "MDI Basic";
         this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
        }
    [STAThread]
    static void Main() 
    {
      Application.Run(new frmContainer());
    }
  }
  public class frmChild : System.Windows.Forms.Form
  {
    private System.ruponentModel.Container components = null;
        public frmChild(MdiBasic.frmContainer parent)
    {
      InitializeComponent();
            this.MdiParent = parent;
        }
    private void InitializeComponent()
    {
      this.ruponents = new System.ruponentModel.Container();
      this.Size = new System.Drawing.Size(300,300);
      this.Text = "frmChild";
    }
  }
}

Form.Menu

    
using System; 
using System.Windows.Forms; 
 
class AddMenuForm : Form { 
  MainMenu MyMenu; 
 
  public AddMenuForm() { 
    Text = "Adding a Main Menu"; 
    MyMenu  = new MainMenu(); 
 
    MenuItem m1 = new MenuItem("File"); 
    MyMenu.MenuItems.Add(m1); 
 
    MenuItem m2 = new MenuItem("Tools"); 
    MyMenu.MenuItems.Add(m2); 
 
    MenuItem subm1 = new MenuItem("Open"); 
    m1.MenuItems.Add(subm1); 
 
    MenuItem subm2 = new MenuItem("Close"); 
    m1.MenuItems.Add(subm2); 
 
    MenuItem subm3 = new MenuItem("Exit"); 
    m1.MenuItems.Add(subm3); 
 
    MenuItem subm4 = new MenuItem("Coordinates"); 
    m2.MenuItems.Add(subm4); 
 
    MenuItem subm5 = new MenuItem("Change Size"); 
    m2.MenuItems.Add(subm5); 
 
    MenuItem subm6 = new MenuItem("Restore"); 
    m2.MenuItems.Add(subm6); 
 
 
    subm1.Click += MMOpenClick; 
    subm2.Click += MMCloseClick; 
    subm3.Click += MMExitClick; 
    subm4.Click += MMCoordClick; 
    subm5.Click += MMChangeClick; 
    subm6.Click += MMRestoreClick; 
 
    Menu = MyMenu; 
  }   
 
  [STAThread] 
  public static void Main() { 
    AddMenuForm skel = new AddMenuForm(); 
 
    Application.Run(skel); 
  } 
 
  protected void MMCoordClick(object who, EventArgs e) { 
  } 
 
  protected void MMChangeClick(object who, EventArgs e) { 
    
  } 
 
  protected void MMRestoreClick(object who, EventArgs e) { 
    
  } 
 
  protected void MMOpenClick(object who, EventArgs e) { 
 
    Console.WriteLine("MMOpenClick"); 
  } 
 
  protected void MMCloseClick(object who, EventArgs e) { 
    Console.WriteLine("MMCloseClick"); 
  } 
 
  protected void MMExitClick(object who, EventArgs e) { 
     Console.WriteLine("Exit"); 
  } 
}

Form.MenuComplete

  
   using System;
  using System.Drawing;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  
  internal struct TheFontSize
  {
    public static int Huge = 30;
    public static int Normal = 20;
    public static int Tiny = 8;
  }
  
  public class mainForm : System.Windows.Forms.Form
  {
    Color currColor = Color.MistyRose;
    private int currFontSize = TheFontSize.Normal;
    private StatusBarPanel sbPnlPrompt = new StatusBarPanel();
    private StatusBarPanel sbPnlTime = new StatusBarPanel();
    private MainMenu mainMenu = new MainMenu();
    
    private MenuItem currentCheckedItem;
    private MenuItem checkedHuge;
    private MenuItem checkedNormal;
    private MenuItem checkedTiny;

    public mainForm()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
      this.MenuComplete += new EventHandler(StatusForm_MenuDone);
      BuildMenuSystem();
      BuildStatBar();
    }
    static void Main() 
    {
      Application.Run(new mainForm());
    }
    private void FileExit_Clicked(object sender, EventArgs e) 
    {
      Console.WriteLine("File | Exit Menu item handler");
      this.Close();
    }
    private void FileSave_Clicked(object sender, EventArgs e) 
    {
            Console.WriteLine("File | Save Menu item handler");
    }
    private void ColorItem_Clicked(object sender, EventArgs e) 
    {
      MenuItem miClicked = (MenuItem)sender;
      string color = miClicked.Text.Remove(0,1);
      
      this.BackColor = Color.FromName(color);
      currColor = this.BackColor;
    }
    private void PopUp_Clicked(object sender, EventArgs e) 
    {
      currentCheckedItem.Checked = false;
      MenuItem miClicked = (MenuItem)sender;
      string item = miClicked.Text;
      
      if(item == "Huge") {
        currFontSize = TheFontSize.Huge;
        currentCheckedItem = checkedHuge;
      }else if(item == "Normal") {
        currFontSize = TheFontSize.Normal;
        currentCheckedItem = checkedNormal;
      }else if(item == "Tiny") {
        currFontSize = TheFontSize.Tiny;
        currentCheckedItem = checkedTiny;
      }
      currentCheckedItem.Checked = true;
      Invalidate();
    }
    protected override void OnPaint(PaintEventArgs e)
    {
      Graphics g = e.Graphics;
      g.DrawString("www.nfex.ru", 
        new Font("Times New Roman", (float)currFontSize), 
        new SolidBrush(Color.Black), 
        this.DisplayRectangle);
    }
    
    protected override void OnResize(EventArgs e)
    {
      base.OnResize(e);
      Invalidate();
    }
    private void HelpAbout_Clicked(object sender, EventArgs e) 
    {
      Console.WriteLine("The amazing final app...", "About...");
    }
        
    private void FileMenuItem_Selected(object sender, EventArgs e) 
    {
      MenuItem miClicked = (MenuItem)sender;
      string item = miClicked.Text.Remove(0,1);
      
      if(item == "Save..."){
        sbPnlPrompt.Text = "Save current settings.";     
      }else{
        sbPnlPrompt.Text = "Terminates this app.";     
        } 
    }
    private void ColorMenuItem_Selected(object sender, EventArgs e) 
    {
      MenuItem miClicked = (MenuItem)sender;
      string item = miClicked.Text.Remove(0,1);
      sbPnlPrompt.Text = "Select " + item;            
    }
    private void HelpAbout_Selected(object sender, EventArgs e) 
    {
      sbPnlPrompt.Text = "Displays app info";
    }
    private void StatusForm_MenuDone(object sender, EventArgs e) 
    {
      sbPnlPrompt.Text = "Ready";
    }
    private void timer1_Tick(object sender, EventArgs e) 
    {
      DateTime t = DateTime.Now;
      string s = t.ToLongTimeString() ;
      sbPnlTime.Text = s ;    
    }
    private void BuildMenuSystem()
    {
      MenuItem miFile = mainMenu.MenuItems.Add("&File");           
      miFile.MenuItems.Add(new MenuItem("&Save...", new EventHandler(this.FileSave_Clicked), Shortcut.CtrlS));     
      miFile.MenuItems.Add(new MenuItem("E&xit", new EventHandler(this.FileExit_Clicked), Shortcut.CtrlX));
      miFile.MenuItems[0].Select += new EventHandler(FileMenuItem_Selected);
      miFile.MenuItems[1].Select += new EventHandler(FileMenuItem_Selected);
      MenuItem miColor = mainMenu.MenuItems.Add("&Background Color");
      miColor.MenuItems.Add("&DarkGoldenrod", new EventHandler(ColorItem_Clicked));
      miColor.MenuItems.Add("&GreenYellow", new EventHandler(ColorItem_Clicked));
      
      for(int i = 0; i < miColor.MenuItems.Count; i++){
        miColor.MenuItems[i].Select += new EventHandler(ColorMenuItem_Selected);
            }
      MenuItem miHelp = mainMenu.MenuItems.Add("Help");  
      miHelp.MenuItems.Add(new MenuItem("&amp;About", new EventHandler(this.HelpAbout_Clicked), Shortcut.CtrlA));
      miHelp.MenuItems[0].Select += new EventHandler(HelpAbout_Selected);
      this.Menu = mainMenu;  
            ContextMenu popUpMenu = new ContextMenu();
      popUpMenu.MenuItems.Add("Huge", new EventHandler(PopUp_Clicked));
      popUpMenu.MenuItems.Add("Normal", new EventHandler(PopUp_Clicked));
      popUpMenu.MenuItems.Add("Tiny", new EventHandler(PopUp_Clicked));
      this.ContextMenu = popUpMenu;
      checkedHuge = this.ContextMenu.MenuItems[0];
      checkedNormal = this.ContextMenu.MenuItems[1];        
      checkedTiny = this.ContextMenu.MenuItems[2];
      
      if(currFontSize == TheFontSize.Huge)
        currentCheckedItem = checkedHuge;
      else if(currFontSize == TheFontSize.Normal)
        currentCheckedItem = checkedNormal;
      else
        currentCheckedItem = checkedTiny;
      currentCheckedItem.Checked = true;
    }
    private void BuildStatBar()
    {
        Timer timer1 = new Timer();
      timer1.Interval = 1000;
      timer1.Enabled = true;
      timer1.Tick += new EventHandler(timer1_Tick);
        StatusBar statusBar = new StatusBar();
        
      statusBar.ShowPanels = true;
      statusBar.Panels.AddRange((StatusBarPanel[])new StatusBarPanel[] {sbPnlPrompt, sbPnlTime});
      sbPnlPrompt.BorderStyle = StatusBarPanelBorderStyle.None;
      sbPnlPrompt.AutoSize = StatusBarPanelAutoSize.Spring;
      sbPnlPrompt.Width = 62;
      sbPnlPrompt.Text = "Ready";
      sbPnlTime.Alignment = System.Windows.Forms.HorizontalAlignment.Right;
      sbPnlTime.Width = 76;
      try
      {
        Icon i = new Icon("icon1.ico");
        sbPnlPrompt.Icon = i;
      } catch(Exception e) {
        MessageBox.Show(e.Message);
      }
      this.Controls.Add(statusBar);  
    }
  }

Form.MinimizeBox

  
using System;
using System.Drawing;
using System.Windows.Forms;
   
class BetterDialog: Form
{
     public static void Main()
     {
          Application.Run(new BetterDialog());
     }
     public BetterDialog()
     {
          Menu = new MainMenu();
          Menu.MenuItems.Add("&Dialog!", new EventHandler(MenuOnClick));
     }
     void MenuOnClick(object obj, EventArgs ea)
     {
          BetterDialogBox dlg = new BetterDialogBox();
          DialogResult    dr  = dlg.ShowDialog();
   
          Console.WriteLine(dr);
     }
}
class BetterDialogBox: Form
{
     public BetterDialogBox()
     {
          Text = "Better Dialog Box";
   
          FormBorderStyle = FormBorderStyle.FixedDialog;
          ControlBox      = false;
          MaximizeBox     = false;
          MinimizeBox     = false;
          ShowInTaskbar   = false;
          StartPosition   = FormStartPosition.Manual;
          Location        = ActiveForm.Location + 
                            SystemInformation.CaptionButtonSize +
                            SystemInformation.FrameBorderSize;
   
          Button btn = new Button();
          btn.Parent   = this;
          btn.Text     = "OK";
          btn.Location = new Point(50, 50);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.OK;
   
          AcceptButton = btn;
   
          btn = new Button();
          btn.Parent   = this;
          btn.Text     = "Cancel";
          btn.Location = new Point(50, 100);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.Cancel;
   
          CancelButton = btn;
     }
}

Form.MinimumSize

 
  using System;
  using System.Drawing;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  public class Form1 : System.Windows.Forms.Form
  {
    private Button myButton; 
    public Form1()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
        
            this.MaximumSize=new Size(300,300);
            this.MinimumSize=new Size(300,300);
      myButton = new Button();
      myButton.Text = "www.nfex.ru";
      myButton.Location = new System.Drawing.Point(64, 32);
      myButton.Size = new System.Drawing.Size(150, 50);
      Controls.Add(myButton);
    }
    static void Main() 
    {
      Application.Run(new Form1());
    }
  }

Form.MouseDown

  
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form{
   public Form1() {
      InitializeComponent();
   }
   private void InitializeComponent() {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
      this.Name = "Form1";
      this.Text = "Form1";
      this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseDown);
   }
   static void Main() {
      Application.Run(new Form1());
   }
   private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) {
      Console.WriteLine("Mouse down");
   }
}

Form.MouseLeave(All other events)

    
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    private void Form1_Activated(object sender, EventArgs e)
    {
        Console.WriteLine("Activated");
    }
    private void Form1_AutoSizeChanged(object sender, EventArgs e)
    {
        Console.WriteLine("Autosizechanged");
       
    }
    private void Form1_AutoValidateChanged(object sender, EventArgs e)
    {
        Console.WriteLine("AutoValidateChanged");
    }
    private void Form1_BackColorChanged(object sender, EventArgs e)
    {
        Console.WriteLine("BackColorChanged");
    }
    private void Form1_BackgroundImageChanged(object sender, EventArgs e)
    {
        Console.WriteLine("BackgroundImageChanged");
    }
    private void Form1_BackgroundImageLayoutChanged(object sender, EventArgs e)
    {
        Console.WriteLine("BackgroundImageLayoutChanged");
    }
    private void Form1_BindingContextChanged(object sender, EventArgs e)
    {
        Console.WriteLine("BindingContextChanged");
    }
    private void Form1_CausesValidationChanged(object sender, EventArgs e)
    {
        Console.WriteLine("CausesValidationChanged");
    }
    private void Form1_ChangeUICues(object sender, UICuesEventArgs e)
    {
        Console.WriteLine("ChangeUICues");
    }
    private void Form1_Click(object sender, EventArgs e)
    {
        Console.WriteLine("Click");
    }
    private void Form1_ContextMenuStripChanged(object sender, EventArgs e)
    {
        Console.WriteLine("ContextMenuStripChanged");
    }
    private void Form1_ControlAdded(object sender, ControlEventArgs e)
    {
        Console.WriteLine("ControlAdded");
    }
    private void Form1_ControlRemoved(object sender, ControlEventArgs e)
    {
        Console.WriteLine("ControlRemoved");
    }
    private void Form1_CursorChanged(object sender, EventArgs e)
    {
        Console.WriteLine("CursorChanged");
    }
    private void Form1_Deactivate(object sender, EventArgs e)
    {
        Console.WriteLine("Deactivate");
    }
    private void Form1_DockChanged(object sender, EventArgs e)
    {
        Console.WriteLine("DockChanged");
    }
    private void Form1_DoubleClick(object sender, EventArgs e)
    {
        Console.WriteLine("DoubleClick");
    }
    private void Form1_DragDrop(object sender, DragEventArgs e)
    {
        Console.WriteLine("DragDrop");
     
    }
    private void Form1_DragEnter(object sender, DragEventArgs e)
    {
        Console.WriteLine("DragEnter");
    }
    private void Form1_DragLeave(object sender, EventArgs e)
    {
        Console.WriteLine("DragLeave");
    }
    private void Form1_DragOver(object sender, DragEventArgs e)
    {
        Console.WriteLine("DragOver");
    }
    private void Form1_EnabledChanged(object sender, EventArgs e)
    {
        Console.WriteLine("EnabledChanged");
    }
    private void Form1_Enter(object sender, EventArgs e)
    {
        Console.WriteLine("Enter");
    }
    private void Form1_FontChanged(object sender, EventArgs e)
    {
        Console.WriteLine("FontChanged");
    }
    private void Form1_ForeColorChanged(object sender, EventArgs e)
    {
        Console.WriteLine("ForeColorChanged");
    }
    private void Form1_FormClosed(object sender, FormClosedEventArgs e)
    {
        Console.WriteLine("FormClosed");
    }
    private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    {
        Console.WriteLine("FormClosing");
    }
    private void Form1_GiveFeedback(object sender, GiveFeedbackEventArgs e)
    {
        Console.WriteLine("GiveFeedback");
    }
    private void Form1_HelpButtonClicked(object sender, CancelEventArgs e)
    {
        Console.WriteLine("HelpButtonClicked");
    }
    private void Form1_HelpRequested(object sender, HelpEventArgs hlpevent)
    {
        Console.WriteLine("HelpRequested");
    }
    private void Form1_ImeModeChanged(object sender, EventArgs e)
    {
        Console.WriteLine("ImeModeChanged");
    }
    private void Form1_InputLanguageChanged(object sender, InputLanguageChangedEventArgs e)
    {
        Console.WriteLine("InputLanguageChanged");
    }
    private void Form1_InputLanguageChanging(object sender, InputLanguageChangingEventArgs e)
    {
        Console.WriteLine("InputLanguageChanging");
    }
    private void Form1_KeyDown(object sender, KeyEventArgs e)
    {
        Console.WriteLine("KeyDown");
    }
    private void Form1_KeyPress(object sender, KeyPressEventArgs e)
    {
        Console.WriteLine("KeyPress");
    }
    private void Form1_KeyUp(object sender, KeyEventArgs e)
    {
        Console.WriteLine("KeyUp");
    }
    private void Form1_Layout(object sender, LayoutEventArgs e)
    {
        Console.WriteLine("Layout");
    }
    private void Form1_Leave(object sender, EventArgs e)
    {
        Console.WriteLine("Leave");
    }
    private void Form1_Load(object sender, EventArgs e)
    {
        Console.WriteLine("Load");
    }
    private void Form1_LocationChanged(object sender, EventArgs e)
    {
        Console.WriteLine("LocationChanged");
    }
    private void Form1_MarginChanged(object sender, EventArgs e)
    {
        Console.WriteLine("MarginChanged");
    }
    private void Form1_MaximizedBoundsChanged(object sender, EventArgs e)
    {
        Console.WriteLine("MaximizedBoundsChanged");
    }
    private void Form1_MaximumSizeChanged(object sender, EventArgs e)
    {
        Console.WriteLine("MAximumSizeChanged");
    }
    private void Form1_MdiChildActivate(object sender, EventArgs e)
    {
        Console.WriteLine("MdiChildActivate");
    }
    private void Form1_MenuComplete(object sender, EventArgs e)
    {
        Console.WriteLine("MenuComplete");
    }
    private void Form1_MenuStart(object sender, EventArgs e)
    {
        Console.WriteLine("MenuStart");
    }
    private void Form1_MinimumSizeChanged(object sender, EventArgs e)
    {
        Console.WriteLine("MinimumSizeChanged");
    }
    private void Form1_MouseCaptureChanged(object sender, EventArgs e)
    {
        Console.WriteLine("MouseCaptureChanged");
    }
    private void Form1_MouseClick(object sender, MouseEventArgs e)
    {
        Console.WriteLine("MouseClick");
    }
    private void Form1_MouseDoubleClick(object sender, MouseEventArgs e)
    {
        Console.WriteLine("MouseDoubleClick");
    }
    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
        Console.WriteLine("MouseDown");
    }
    private void Form1_MouseEnter(object sender, EventArgs e)
    {
        Console.WriteLine("MouseEnter");
    }
    private void Form1_MouseHover(object sender, EventArgs e)
    {
        Console.WriteLine("MouseHover");
    }
    private void Form1_MouseLeave(object sender, EventArgs e)
    {
        Console.WriteLine("MouseLeave");
    }
    private void Form1_MouseMove(object sender, MouseEventArgs e)
    {
        Console.WriteLine("MouseMove");
    }
    private void Form1_MouseUp(object sender, MouseEventArgs e)
    {
        Console.WriteLine("MouseUp");
    }
    private void Form1_Move(object sender, EventArgs e)
    {
        Console.WriteLine("Move");
    }
    private void Form1_PaddingChanged(object sender, EventArgs e)
    {
        Console.WriteLine("PaddingChanged");
    }
    private void Form1_Paint(object sender, PaintEventArgs e)
    {
        Console.WriteLine("Paint");
    }
    private void Form1_ParentChanged(object sender, EventArgs e)
    {
        Console.WriteLine("ParentChanged");
    }
    private void Form1_QueryAccessibilityHelp(object sender, QueryAccessibilityHelpEventArgs e)
    {
        Console.WriteLine("QueryAccessibilityHelp");
    }
    private void Form1_QueryContinueDrag(object sender, QueryContinueDragEventArgs e)
    {
        Console.WriteLine("QueryContinueDrag");
    }
    private void Form1_RegionChanged(object sender, EventArgs e)
    {
        Console.WriteLine("RegionChanged");
    }
    private void Form1_Resize(object sender, EventArgs e)
    {
        Console.WriteLine("Resize");
    }
    private void Form1_ResizeBegin(object sender, EventArgs e)
    {
        Console.WriteLine("ResizeBegin");
    }
    private void Form1_ResizeEnd(object sender, EventArgs e)
    {
        Console.WriteLine("ResizeEnd");
    }
    private void Form1_RightToLeftChanged(object sender, EventArgs e)
    {
        Console.WriteLine("RightToLeftChanged");
    }
    private void Form1_RightToLeftLayoutChanged(object sender, EventArgs e)
    {
        Console.WriteLine("RightToLeftLayoutChanged");
    }
    private void Form1_Scroll(object sender, ScrollEventArgs e)
    {
        Console.WriteLine("Scroll");
    }
    private void Form1_Shown(object sender, EventArgs e)
    {
        Console.WriteLine("Shown");
    }
    private void Form1_SizeChanged(object sender, EventArgs e)
    {
        Console.WriteLine("SizeChanged");
    }
    private void Form1_StyleChanged(object sender, EventArgs e)
    {
        Console.WriteLine("StyleChanged");
    }
    private void Form1_SystemColorsChanged(object sender, EventArgs e)
    {
        Console.WriteLine("SystemColorsChanged");
    }
    private void Form1_TextChanged(object sender, EventArgs e)
    {
        Console.WriteLine("TextChanged");
    }
    private void Form1_Validated(object sender, EventArgs e)
    {
        Console.WriteLine("Validated");
    }
    private void Form1_Validating(object sender, CancelEventArgs e)
    {
        Console.WriteLine("Validating");
    }
    private void Form1_VisibleChanged(object sender, EventArgs e)
    {
        Console.WriteLine("VisibleChanged");
    }
}
partial class Form1
{
    private void InitializeComponent()
    {
        this.button1 = new System.Windows.Forms.Button();
        this.SuspendLayout();
        // 
        // button1
        // 
        this.button1.Location = new System.Drawing.Point(87, 79);
        this.button1.Name = "button1";
        this.button1.Size = new System.Drawing.Size(75, 23);
        this.button1.TabIndex = 0;
        this.button1.Text = "button1";
        // 
        // Form1
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(292, 266);
        this.Controls.Add(this.button1);
        this.Name = "Form1";
        this.Text = "Form1";
        this.CursorChanged += new System.EventHandler(this.Form1_CursorChanged);
        this.RightToLeftLayoutChanged += new System.EventHandler(this.Form1_RightToLeftLayoutChanged);
        this.QueryContinueDrag += new System.Windows.Forms.QueryContinueDragEventHandler(this.Form1_QueryContinueDrag);
        this.Deactivate += new System.EventHandler(this.Form1_Deactivate);
        this.Load += new System.EventHandler(this.Form1_Load);
        this.BackgroundImageLayoutChanged += new System.EventHandler(this.Form1_BackgroundImageLayoutChanged);
        this.RightToLeftChanged += new System.EventHandler(this.Form1_RightToLeftChanged);
        this.DragLeave += new System.EventHandler(this.Form1_DragLeave);
        this.InputLanguageChanged += new System.Windows.Forms.InputLanguageChangedEventHandler(this.Form1_InputLanguageChanged);
        this.Validating += new System.ruponentModel.CancelEventHandler(this.Form1_Validating);
        this.BackgroundImageChanged += new System.EventHandler(this.Form1_BackgroundImageChanged);
        this.MouseDoubleClick += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseDoubleClick);
        this.DragEnter += new System.Windows.Forms.DragEventHandler(this.Form1_DragEnter);
        this.ControlAdded += new System.Windows.Forms.ControlEventHandler(this.Form1_ControlAdded);
        this.FontChanged += new System.EventHandler(this.Form1_FontChanged);
        this.MaximizedBoundsChanged += new System.EventHandler(this.Form1_MaximizedBoundsChanged);
        this.AutoSizeChanged += new System.EventHandler(this.Form1_AutoSizeChanged);
        this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
        this.VisibleChanged += new System.EventHandler(this.Form1_VisibleChanged);
        this.BindingContextChanged += new System.EventHandler(this.Form1_BindingContextChanged);
        this.HelpButtonClicked += new System.ruponentModel.CancelEventHandler(this.Form1_HelpButtonClicked);
        this.EnabledChanged += new System.EventHandler(this.Form1_EnabledChanged);
        this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseDown);
        this.ContextMenuStripChanged += new System.EventHandler(this.Form1_ContextMenuStripChanged);
        this.Scroll += new System.Windows.Forms.ScrollEventHandler(this.Form1_Scroll);
        this.MouseLeave += new System.EventHandler(this.Form1_MouseLeave);
        this.MouseClick += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseClick);
        this.Validated += new System.EventHandler(this.Form1_Validated);
        this.ParentChanged += new System.EventHandler(this.Form1_ParentChanged);
        this.Resize += new System.EventHandler(this.Form1_Resize);
        this.ControlRemoved += new System.Windows.Forms.ControlEventHandler(this.Form1_ControlRemoved);
        this.Shown += new System.EventHandler(this.Form1_Shown);
        this.AutoValidateChanged += new System.EventHandler(this.Form1_AutoValidateChanged);
        this.SizeChanged += new System.EventHandler(this.Form1_SizeChanged);
        this.DoubleClick += new System.EventHandler(this.Form1_DoubleClick);
        this.Activated += new System.EventHandler(this.Form1_Activated);
        this.Enter += new System.EventHandler(this.Form1_Enter);
        this.Layout += new System.Windows.Forms.LayoutEventHandler(this.Form1_Layout);
        this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);
        this.StyleChanged += new System.EventHandler(this.Form1_StyleChanged);
        this.ForeColorChanged += new System.EventHandler(this.Form1_ForeColorChanged);
        this.DragDrop += new System.Windows.Forms.DragEventHandler(this.Form1_DragDrop);
        this.MouseEnter += new System.EventHandler(this.Form1_MouseEnter);
        this.MdiChildActivate += new System.EventHandler(this.Form1_MdiChildActivate);
        this.Leave += new System.EventHandler(this.Form1_Leave);
        this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
        this.MinimumSizeChanged += new System.EventHandler(this.Form1_MinimumSizeChanged);
        this.Move += new System.EventHandler(this.Form1_Move);
        this.MouseCaptureChanged += new System.EventHandler(this.Form1_MouseCaptureChanged);
        this.FormClosed += new System.Windows.Forms.FormClosedEventHandler(this.Form1_FormClosed);
        this.PaddingChanged += new System.EventHandler(this.Form1_PaddingChanged);
        this.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.Form1_KeyPress);
        this.ChangeUICues += new System.Windows.Forms.UICuesEventHandler(this.Form1_ChangeUICues);
        this.DockChanged += new System.EventHandler(this.Form1_DockChanged);
        this.GiveFeedback += new System.Windows.Forms.GiveFeedbackEventHandler(this.Form1_GiveFeedback);
        this.ImeModeChanged += new System.EventHandler(this.Form1_ImeModeChanged);
        this.Click += new System.EventHandler(this.Form1_Click);
        this.SystemColorsChanged += new System.EventHandler(this.Form1_SystemColorsChanged);
        this.QueryAccessibilityHelp += new System.Windows.Forms.QueryAccessibilityHelpEventHandler(this.Form1_QueryAccessibilityHelp);
        this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Form1_FormClosing);
        this.RegionChanged += new System.EventHandler(this.Form1_RegionChanged);
        this.KeyUp += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyUp);
        this.MarginChanged += new System.EventHandler(this.Form1_MarginChanged);
        this.TextChanged += new System.EventHandler(this.Form1_TextChanged);
        this.ResizeBegin += new System.EventHandler(this.Form1_ResizeBegin);
        this.HelpRequested += new System.Windows.Forms.HelpEventHandler(this.Form1_HelpRequested);
        this.LocationChanged += new System.EventHandler(this.Form1_LocationChanged);
        this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyDown);
        this.BackColorChanged += new System.EventHandler(this.Form1_BackColorChanged);
        this.InputLanguageChanging += new System.Windows.Forms.InputLanguageChangingEventHandler(this.Form1_InputLanguageChanging);
        this.MenuStart += new System.EventHandler(this.Form1_MenuStart);
        this.MouseHover += new System.EventHandler(this.Form1_MouseHover);
        this.ResizeEnd += new System.EventHandler(this.Form1_ResizeEnd);
        this.DragOver += new System.Windows.Forms.DragEventHandler(this.Form1_DragOver);
        this.CausesValidationChanged += new System.EventHandler(this.Form1_CausesValidationChanged);
        this.MenuComplete += new System.EventHandler(this.Form1_MenuComplete);
        this.MaximumSizeChanged += new System.EventHandler(this.Form1_MaximumSizeChanged);
        this.ResumeLayout(false);
    }
    private System.Windows.Forms.Button button1;
}
public class FormEventAll
{
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
        MessageBox.Show("Click OK to finish");
    }
}

Form.MouseUp

    

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormMouseUpEvent : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormMouseUpEvent()
  {
    this.MouseUp += new MouseEventHandler(OnMouseUp);
    InitializeComponent();
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );    
  }
  private void InitializeComponent()
  {
    this.ruponents = new System.ruponentModel.Container();
    this.Size = new System.Drawing.Size(300,300);
    this.Text = "Form1";
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormMouseUpEvent());
  }
  protected void OnMouseUp(object sender, MouseEventArgs e)
  {
    // Which mouse button was clicked?
    if(e.Button == MouseButtons.Left)
      MessageBox.Show("Left click!");
    if(e.Button == MouseButtons.Right)
      MessageBox.Show("Right click!");
    if(e.Button == MouseButtons.Middle)
      MessageBox.Show("Middle click!");
  }
}

Form.OnDragDrop

  

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Windows.Forms;
class ImageDrop : Form {
    bool bIsTarget;
    Image image;
    public static void Main() {
        Application.Run(new ImageDrop());
    }
    public ImageDrop() {
        AllowDrop = true;
    }
    protected override void OnDragOver(DragEventArgs dea) {
        if (dea.Data.GetDataPresent(DataFormats.FileDrop) || dea.Data.GetDataPresent(typeof(Metafile)) || dea.Data.GetDataPresent(typeof(Bitmap))) {
            if ((dea.AllowedEffect & DragDropEffects.Move) != 0)
                dea.Effect = DragDropEffects.Move;
            if (((dea.AllowedEffect & DragDropEffects.Copy) != 0) && ((dea.KeyState & 0x08) != 0))    // Ctrl key
                dea.Effect = DragDropEffects.Copy;
        }
    }
    protected override void OnDragDrop(DragEventArgs dea) {
        if (dea.Data.GetDataPresent(DataFormats.FileDrop)) {
            string[] astr = (string[])dea.Data.GetData(DataFormats.FileDrop);
            image = Image.FromFile(astr[0]);
            Invalidate();
        } else {
            if (dea.Data.GetDataPresent(typeof(Metafile)))
                image = (Image)dea.Data.GetData(typeof(Metafile));
            else if (dea.Data.GetDataPresent(typeof(Bitmap)))
                image = (Image)dea.Data.GetData(typeof(Bitmap));
            bIsTarget = true;
            Invalidate();
        }
    }
    protected override void OnMouseDown(MouseEventArgs mea) {
        if (image != null) {
            bIsTarget = false;
            DragDropEffects dde = DoDragDrop(image,DragDropEffects.Copy | DragDropEffects.Move);
            if (dde == DragDropEffects.Move && !bIsTarget)
                image = null;
        }
    }
}

Form.OnDragOver

  

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Windows.Forms;
class ImageDrop : Form {
    bool bIsTarget;
    Image image;
    public static void Main() {
        Application.Run(new ImageDrop());
    }
    public ImageDrop() {
        AllowDrop = true;
    }
    protected override void OnDragOver(DragEventArgs dea) {
        if (dea.Data.GetDataPresent(DataFormats.FileDrop) || dea.Data.GetDataPresent(typeof(Metafile)) || dea.Data.GetDataPresent(typeof(Bitmap))) {
            if ((dea.AllowedEffect & DragDropEffects.Move) != 0)
                dea.Effect = DragDropEffects.Move;
            if (((dea.AllowedEffect & DragDropEffects.Copy) != 0) && ((dea.KeyState & 0x08) != 0))    // Ctrl key
                dea.Effect = DragDropEffects.Copy;
        }
    }
    protected override void OnDragDrop(DragEventArgs dea) {
        if (dea.Data.GetDataPresent(DataFormats.FileDrop)) {
            string[] astr = (string[])dea.Data.GetData(DataFormats.FileDrop);
            image = Image.FromFile(astr[0]);
            Invalidate();
        } else {
            if (dea.Data.GetDataPresent(typeof(Metafile)))
                image = (Image)dea.Data.GetData(typeof(Metafile));
            else if (dea.Data.GetDataPresent(typeof(Bitmap)))
                image = (Image)dea.Data.GetData(typeof(Bitmap));
            bIsTarget = true;
            Invalidate();
        }
    }
    protected override void OnMouseDown(MouseEventArgs mea) {
        if (image != null) {
            bIsTarget = false;
            DragDropEffects dde = DoDragDrop(image,DragDropEffects.Copy | DragDropEffects.Move);
            if (dde == DragDropEffects.Move && !bIsTarget)
                image = null;
        }
    }
}

Form.OnInputLanguageChanged

  

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class InternationalText : System.Windows.Forms.Form {
    internal System.Windows.Forms.Label lblInternationalText;
    internal System.Windows.Forms.Label lblCharCode;
    private System.Windows.Forms.TextBox textBox1;
    public InternationalText() {
        this.lblInternationalText = new System.Windows.Forms.Label();
        this.lblCharCode = new System.Windows.Forms.Label();
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.SuspendLayout();
        this.lblInternationalText.Location = new System.Drawing.Point(8, 64);
        this.lblInternationalText.Size = new System.Drawing.Size(288, 23);
        this.lblCharCode.Location = new System.Drawing.Point(8, 96);
        this.lblCharCode.Size = new System.Drawing.Size(88, 23);
        this.textBox1.Location = new System.Drawing.Point(8, 24);
        this.textBox1.Size = new System.Drawing.Size(288, 20);
        this.textBox1.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress);
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(304, 134);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                      this.textBox1,
                                                                      this.lblCharCode,
                                                                      this.lblInternationalText});
        this.MaximizeBox = false;
        this.ResumeLayout(false);
    }
    [STAThread]
    static void Main() {
        Application.Run(new InternationalText());
    }
    protected override void OnInputLanguageChanged(InputLanguageChangedEventArgs e) {
        MessageBox.Show(e.InputLanguage.Culture.Name);
    }
    protected override void OnInputLanguageChanging(InputLanguageChangingEventArgs e) {
        MessageBox.Show(e.InputLanguage.Culture.Name);
    }
    private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e) {
        lblInternationalText.Text += e.KeyChar.ToString();
        lblCharCode.Text = ((int)e.KeyChar).ToString();
    }
}

Form.OnKeyDown

   
using System;
using System.Drawing;
using System.Windows.Forms;
   
class ExitOnX: Form
{
     public static void Main()
     {
          Application.Run(new ExitOnX());
     }
     public ExitOnX()
     {
          Text = "Exit on X";
     }
     protected override void OnKeyDown(KeyEventArgs kea)
     {
          if (kea.KeyCode == Keys.X)
               Close();
     }
}

Form.OnKeyPress

   

using System.Drawing;
using System;
using System.Windows.Forms;
public class TryKey : Form {
  private char theKey = "d"; 
  public TryKey() {
    Size = new Size(300,200);
    BackColor = Color.White;
  }
  protected override void OnPaint(PaintEventArgs e) {
    Graphics g = e.Graphics;                                                                  
    g.DrawString(theKey.ToString(), new Font("Arial", 36, FontStyle.Bold), Brushes.Red, 100, 50);
    base.OnPaint(e); 
  }
  protected override void OnKeyDown(KeyEventArgs e){
    if (e.Control){
       Console.WriteLine("Control");
    }
    if (e.KeyCode == Keys.Right){
       Console.WriteLine("Right");
    }
    else if (e.KeyCode == Keys.Left){
       Console.WriteLine("Left");
    }
    Invalidate(); 
    base.OnKeyDown(e);  
  }
  protected override void OnKeyUp(KeyEventArgs e) { 
    Console.WriteLine("Key Up");
    base.OnKeyUp(e);
  }
  protected override void OnKeyPress(KeyPressEventArgs e) {
    if (char.IsLetterOrDigit(e.KeyChar)){
      theKey = e.KeyChar;
    }  
    Invalidate(); 
    base.OnKeyPress(e);
  }
  public static void Main() {
    Application.Run(new TryKey());
  }
}

Form.OnMouseEnter

  


using System;
using System.Drawing;
using System.Windows.Forms;
   
class EnterLeave: Form
{
     bool bInside = false;
   
     public static void Main()
     {
          Application.Run(new EnterLeave());
     }
     public EnterLeave()
     {
     }
     protected override void OnMouseEnter(EventArgs ea)
     {
          bInside = true;
          Invalidate();
     }
     protected override void OnMouseLeave(EventArgs ea)
     {
          bInside = false;
          Invalidate();
     }
     protected override void OnMouseHover(EventArgs ea)
     {
          Graphics grfx = CreateGraphics();
    
          grfx.Clear(Color.Red);
          System.Threading.Thread.Sleep(500);
          grfx.Clear(Color.Green);
          grfx.Dispose();
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          Graphics grfx = pea.Graphics;
   
          grfx.Clear(bInside ? Color.Green : BackColor);
     }
}

Form.OnMouseHover

  

using System;
using System.Drawing;
using System.Windows.Forms;
   
class EnterLeave: Form
{
     bool bInside = false;
   
     public static void Main()
     {
          Application.Run(new EnterLeave());
     }
     public EnterLeave()
     {
     }
     protected override void OnMouseEnter(EventArgs ea)
     {
          bInside = true;
          Invalidate();
     }
     protected override void OnMouseLeave(EventArgs ea)
     {
          bInside = false;
          Invalidate();
     }
     protected override void OnMouseHover(EventArgs ea)
     {
          Graphics grfx = CreateGraphics();
    
          grfx.Clear(Color.Red);
          System.Threading.Thread.Sleep(500);
          grfx.Clear(Color.Green);
          grfx.Dispose();
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          Graphics grfx = pea.Graphics;
   
          grfx.Clear(bInside ? Color.Green : BackColor);
     }
}

Form.OnMouseLeave

  

using System;
using System.Drawing;
using System.Windows.Forms;
   
class EnterLeave: Form
{
     bool bInside = false;
   
     public static void Main()
     {
          Application.Run(new EnterLeave());
     }
     public EnterLeave()
     {
     }
     protected override void OnMouseEnter(EventArgs ea)
     {
          bInside = true;
          Invalidate();
     }
     protected override void OnMouseLeave(EventArgs ea)
     {
          bInside = false;
          Invalidate();
     }
     protected override void OnMouseHover(EventArgs ea)
     {
          Graphics grfx = CreateGraphics();
    
          grfx.Clear(Color.Red);
          System.Threading.Thread.Sleep(500);
          grfx.Clear(Color.Green);
          grfx.Dispose();
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          Graphics grfx = pea.Graphics;
   
          grfx.Clear(bInside ? Color.Green : BackColor);
     }
}

Form.OnMouseMove

    

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormMouseMoveEvent : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormMouseMoveEvent()
  {
    this.MouseMove += new MouseEventHandler(OnMouseMove);
    InitializeComponent();
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );    
  }
  private void InitializeComponent()
  {
    this.ruponents = new System.ruponentModel.Container();
    this.Size = new System.Drawing.Size(300,300);
    this.Text = "Form1";
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormMouseMoveEvent());
  }
  protected void OnMouseMove(object sender, MouseEventArgs e)
  {
    this.Text = "Current Pos: (" + e.X + ", " + e.Y + ")";
  }
}

Form.OnMouseWheel

  
using System;
using System.Drawing;
using System.Windows.Forms;
   
class PoePoem: Form
{
     public static void Main()
     {
          if (!SystemInformation.MouseWheelPresent)
          {
               Console.WriteLine("Program needs a mouse with a mouse wheel!");
               return;
          }
          Application.Run(new PoePoem());
     }
     public PoePoem()
     {
     }
     protected override void OnMouseWheel(MouseEventArgs mea)
     {
          Console.WriteLine(mea.Delta);
   
     }
}

Form.OnPaint(PaintEventArgs e)

    
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form {
    protected override void OnPaint(PaintEventArgs e) {
    Graphics g = e.Graphics;
    g.FillRectangle(Brushes.White, this.ClientRectangle);
    Font f = new Font("Times New Roman", 24);
    g.DrawString("Translation", f, Brushes.Black, 0, 0);
    g.TranslateTransform(150, 75);
    g.DrawString("Translation", f, Brushes.Black, 0, 0);
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}

Form.OnResize

    
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class GraphicUnitDocument : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public GraphicUnitDocument()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(408, 273);
    this.Name = "GraphicUnitDocument";
    this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
    this.Text = "GDI+ Coordinate";
    this.Resize += new System.EventHandler(this.OnResize);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.OnPaint);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new GraphicUnitDocument());
  }
  protected void OnPaint (object sender, System.Windows.Forms.PaintEventArgs e)
  {
      GraphicsUnit gUnit = GraphicsUnit.Pixel;
      Point renderingOrgPt = new Point(0,0);
    Graphics g = e.Graphics;
    g.SmoothingMode = SmoothingMode.AntiAlias;
    
    gUnit = GraphicsUnit.Document;
    
    g.PageUnit = gUnit;
    g.TranslateTransform(renderingOrgPt.X,renderingOrgPt.Y);
    g.DrawRectangle(new Pen(Color.Red, 1), 0, 0, 100, 100);
  
    this.Text = string.Format("PageUnit: {0}, Origin: {1}",  gUnit, renderingOrgPt.ToString());
  }
  protected void OnResize (object sender, System.EventArgs e)
  {
    Invalidate();
  }
}

Form.Opacity

   
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormOpacitySetting : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormOpacitySetting()
  {
    InitializeComponent();
    Opacity = 0.5d;
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );
  }
  private void InitializeComponent()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(292, 273);
    this.Text = "Form1";
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormOpacitySetting());
  }
  private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    g.DrawString("String...", new Font("Times New Roman", 20), new SolidBrush(Color.Black), 40, 10);
  }
}

Form.Paint

    
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class DrawLineDemo : System.Windows.Forms.Form
{
  public DrawLineDemo()
  {
    this.BackColor = System.Drawing.Color.White;
    this.ClientSize = new System.Drawing.Size(400, 400);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.DrawLineDemo_Paint);
  }
  static void Main() 
  {
    Application.Run(new DrawLineDemo());
  }
  private void DrawLineDemo_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    Pen p = new Pen(Color.Black, 10);
    g.DrawLine(p, 25, 25, 375, 375);
  }
}

Form.Region

    
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
public class IrregularForm : Form
{
    public IrregularForm()
    {
        this.cmdClose = new System.Windows.Forms.Button();
        this.SuspendLayout();
        this.cmdClose.Location = new System.Drawing.Point(94, 231);
        this.cmdClose.Size = new System.Drawing.Size(75, 23);
        this.cmdClose.Text = "Close";
        this.cmdClose.UseVisualStyleBackColor = true;
        this.cmdClose.Click += new System.EventHandler(this.cmdClose_Click);
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(295, 270);
        this.Controls.Add(this.cmdClose);
        this.Text = "Irregular Form";
        this.Load += new System.EventHandler(this.IrregularForm_Load);
        this.ResumeLayout(false);
    }
    private void IrregularForm_Load(object sender, EventArgs e)
    {
        GraphicsPath path = new GraphicsPath();
        Point[] pointsA = new Point[]{new Point(0, 0),new Point(40, 60), new Point(this.Width - 100, 10)};
        path.AddCurve(pointsA);
        Point[] pointsB = new Point[]{
                new Point(this.Width - 40, this.Height - 60), 
                new Point(this.Width, this.Height),
                new Point(10, this.Height)
            };
        path.AddCurve(pointsB);
        path.CloseAllFigures();
        this.Region = new Region(path);
    }
    private void cmdClose_Click(object sender, EventArgs e)
    {
        this.Close();
    }
    private System.Windows.Forms.Button cmdClose;
    
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new IrregularForm());
    }
    
}

Form.Resize

   
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class SetBackgroundForm : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components;
  public SetBackgroundForm()
  {
    InitializeComponent();
    BackColor = Color.LemonChiffon;
  }

  private void InitializeComponent()
  {
    this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    this.ClientSize = new System.Drawing.Size(292, 273);
    this.Resize += new System.EventHandler(this.SetBackgroundForm_Resize);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.SetBackgroundForm_Paint);
    }
  [STAThread]
  static void Main() 
  {
    Application.Run(new SetBackgroundForm());
  }
  private void SetBackgroundForm_Resize(object sender, System.EventArgs e)
  {
    Invalidate();
    Console.WriteLine("Resize");
  }
  private void SetBackgroundForm_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    g.DrawString("Text", 
      new Font("Times New Roman", 20), 
      new SolidBrush(Color.Black), 
      this.DisplayRectangle);    
  }
}

Form.ResizeRedraw

    
using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
   
class PrintableForm: Form
{
     public static void Main()
     {
          Application.Run(new PrintableForm());
     }
     public PrintableForm()
     {
          ResizeRedraw = true;
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          Pen pen = new Pen(clr);
   
          grfx.DrawLine(pen, 0,      0, cx - 1, cy - 1);
          grfx.DrawLine(pen, cx - 1, 0, 0,      cy - 1);
     }
}

Form.SetStyle

  
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class Form1 : System.Windows.Forms.Form{
   private System.ruponentModel.Container components = null;
   private Image theImage;
   public Form1() {
      InitializeComponent();
      SetStyle(ControlStyles.Opaque, true);
      theImage = new Bitmap("Winter.jpg");
   }
   protected override void OnPaint(PaintEventArgs e){
      Graphics g = e.Graphics;
      g.DrawImage(theImage, ClientRectangle);
   }

     private void InitializeComponent() {
        this.ruponents = new System.ruponentModel.Container();
        this.Size = new System.Drawing.Size(300,300);
        this.Text = "Form1";
     }
     static void Main() {
         Application.Run(new Form1());
     }
}

Form.Show

    



using System.Windows.Forms;
   
class ShowForm
{
     public static void Main()
     {
          Form form = new Form();
   
          form.Show();
     }
}

Form.ShowInTaskbar

  
using System;
using System.Drawing;
using System.Windows.Forms;
   
class BetterDialog: Form
{
     public static void Main()
     {
          Application.Run(new BetterDialog());
     }
     public BetterDialog()
     {
          Menu = new MainMenu();
          Menu.MenuItems.Add("&Dialog!", new EventHandler(MenuOnClick));
     }
     void MenuOnClick(object obj, EventArgs ea)
     {
          BetterDialogBox dlg = new BetterDialogBox();
          DialogResult    dr  = dlg.ShowDialog();
   
          Console.WriteLine(dr);
     }
}
class BetterDialogBox: Form
{
     public BetterDialogBox()
     {
          Text = "Better Dialog Box";
   
          FormBorderStyle = FormBorderStyle.FixedDialog;
          ControlBox      = false;
          MaximizeBox     = false;
          MinimizeBox     = false;
          ShowInTaskbar   = false;
          StartPosition   = FormStartPosition.Manual;
          Location        = ActiveForm.Location + 
                            SystemInformation.CaptionButtonSize +
                            SystemInformation.FrameBorderSize;
   
          Button btn = new Button();
          btn.Parent   = this;
          btn.Text     = "OK";
          btn.Location = new Point(50, 50);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.OK;
   
          AcceptButton = btn;
   
          btn = new Button();
          btn.Parent   = this;
          btn.Text     = "Cancel";
          btn.Location = new Point(50, 100);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.Cancel;
   
          CancelButton = btn;
     }
}

Form.Size

    
    using System;
    using System.Drawing;
    using System.Collections;
    using System.ruponentModel;
    using System.Windows.Forms;
    using System.Data;
    
    public class MyFirstWindow : System.Windows.Forms.Form
    {
        public MyFirstWindow()
        {
            InitializeComponent();
        }
        
        
        private void InitializeComponent()
        {
            this.Size = new System.Drawing.Size(300,300);
            this.Text = "MyFirstWindow";
        }
        
        public static void Main(string[] args) 
        {
            Application.Run(new MyFirstWindow());
        }
    }

Form.SuspendLayout

    




using System;
using System.Windows.Forms;
class MainForm : Form
{
    private Label label1;
    private TextBox textBox1;
    private Button button1;
    public MainForm()
    {
         this.label1 = new Label();
         this.textBox1 = new TextBox();
         this.button1 = new Button();
         this.SuspendLayout();
         this.label1.Location = new System.Drawing.Point(16, 36);
         this.label1.Name = "label1";
         this.label1.Size = new System.Drawing.Size(128, 16);
         this.label1.TabIndex = 0;
         this.label1.Text = "Please enter your name:"; 
         this.textBox1.Location = new System.Drawing.Point(152, 32);
         this.textBox1.Name = "textBox1";
         this.textBox1.TabIndex = 1;
         this.textBox1.Text = "";
         this.button1.Location = new System.Drawing.Point(109, 80);
         this.button1.Name = "button1";
         this.button1.TabIndex = 2;
         this.button1.Text = "Enter";
         this.button1.Click += new System.EventHandler(this.button1_Click);
         this.ClientSize = new System.Drawing.Size(292, 126);
         this.Controls.Add(this.button1);
         this.Controls.Add(this.textBox1);
         this.Controls.Add(this.label1);
         this.Name = "form1";
         this.Text = "Visual C#";
         this.ResumeLayout(false);
     }
     private void button1_Click(object sender, System.EventArgs e)
     {
        System.Console.WriteLine("User entered: " + textBox1.Text);
        MessageBox.Show("Welcome, " + textBox1.Text, "Visual C#");
     }
     [STAThread]
     public static void Main()
     {
        Application.EnableVisualStyles();
        Application.Run(new MainForm());
     }
}

Form.Text

    
using System;
using System.Drawing;
using System.Windows.Forms;
   
class Scribble: Form
{
     bool  bTracking;
     Point ptLast;
   
     public static void Main()
     {
          Application.Run(new Scribble());
     }
     public Scribble()
     {
          Text = "Scribble";
     }
     protected override void OnMouseDown(MouseEventArgs mea)
     {
          if (mea.Button != MouseButtons.Left)
               return;
          ptLast = new Point(mea.X, mea.Y);
          bTracking = true;
     }
     protected override void OnMouseMove(MouseEventArgs mea)
     {
          if (!bTracking)
               return;
          Point ptNew = new Point(mea.X, mea.Y);
          Graphics grfx = CreateGraphics();
          grfx.DrawLine(new Pen(ForeColor), ptLast, ptNew);
          grfx.Dispose();
          ptLast = ptNew;
     }
     protected override void OnMouseUp(MouseEventArgs mea)
     {
          bTracking = false;
     }
}

Form.Top

   
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FormBoundsSetting : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  public FormBoundsSetting()
  {
    Top = 100;
    Left = 75;
    Height = 100;
    Width = 500;
    MessageBox.Show(Bounds.ToString(), "Current rect");
    InitializeComponent();
  }
  protected override void Dispose( bool disposing )
  {
    if( disposing )
    {
      if (components != null) 
      {
        components.Dispose();
      }
    }
    base.Dispose( disposing );    
  }
  private void InitializeComponent()
  {
    this.ruponents = new System.ruponentModel.Container();
    this.Size = new System.Drawing.Size(300,300);
    this.Text = "Form1";
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FormBoundsSetting());
  }
}

Form.TransparencyKey

   
using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
  private System.Windows.Forms.PictureBox PictureBox4;
  private System.Windows.Forms.PictureBox PictureBox2;
  private System.Windows.Forms.PictureBox PictureBox1;
  private System.Windows.Forms.PictureBox PictureBox3;
  public Form1() {
        InitializeComponent();
  }
  private void InitializeComponent()
  {
    this.PictureBox4 = new System.Windows.Forms.PictureBox();
    this.PictureBox2 = new System.Windows.Forms.PictureBox();
    this.PictureBox1 = new System.Windows.Forms.PictureBox();
    this.PictureBox3 = new System.Windows.Forms.PictureBox();
    ((System.ruponentModel.ISupportInitialize)(this.PictureBox4)).BeginInit();
    ((System.ruponentModel.ISupportInitialize)(this.PictureBox2)).BeginInit();
    ((System.ruponentModel.ISupportInitialize)(this.PictureBox1)).BeginInit();
    ((System.ruponentModel.ISupportInitialize)(this.PictureBox3)).BeginInit();
    this.SuspendLayout();
    // 
    // PictureBox4
    // 
    this.PictureBox4.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(128)))));
    this.PictureBox4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
    this.PictureBox4.Location = new System.Drawing.Point(156, 141);
    this.PictureBox4.Name = "PictureBox4";
    this.PictureBox4.Size = new System.Drawing.Size(76, 76);
    this.PictureBox4.TabIndex = 14;
    this.PictureBox4.TabStop = false;
    // 
    // PictureBox2
    // 
    this.PictureBox2.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(128)))));
    this.PictureBox2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
    this.PictureBox2.Location = new System.Drawing.Point(60, 141);
    this.PictureBox2.Name = "PictureBox2";
    this.PictureBox2.Size = new System.Drawing.Size(76, 76);
    this.PictureBox2.TabIndex = 13;
    this.PictureBox2.TabStop = false;
    // 
    // PictureBox1
    // 
    this.PictureBox1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(128)))));
    this.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
    this.PictureBox1.Location = new System.Drawing.Point(156, 49);
    this.PictureBox1.Name = "PictureBox1";
    this.PictureBox1.Size = new System.Drawing.Size(76, 76);
    this.PictureBox1.TabIndex = 12;
    this.PictureBox1.TabStop = false;
    // 
    // PictureBox3
    // 
    this.PictureBox3.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(128)))));
    this.PictureBox3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
    this.PictureBox3.Location = new System.Drawing.Point(60, 49);
    this.PictureBox3.Name = "PictureBox3";
    this.PictureBox3.Size = new System.Drawing.Size(76, 76);
    this.PictureBox3.TabIndex = 11;
    this.PictureBox3.TabStop = false;
    // 
    // Holes
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.ClientSize = new System.Drawing.Size(292, 266);
    this.Controls.Add(this.PictureBox4);
    this.Controls.Add(this.PictureBox2);
    this.Controls.Add(this.PictureBox1);
    this.Controls.Add(this.PictureBox3);
    this.Name = "Holes";
    this.Text = "Holes";
    this.TransparencyKey = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(128)))));
    ((System.ruponentModel.ISupportInitialize)(this.PictureBox4)).EndInit();
    ((System.ruponentModel.ISupportInitialize)(this.PictureBox2)).EndInit();
    ((System.ruponentModel.ISupportInitialize)(this.PictureBox1)).EndInit();
    ((System.ruponentModel.ISupportInitialize)(this.PictureBox3)).EndInit();
    this.ResumeLayout(false);
  }
  [STAThread]
  static void Main()
  {
    Application.EnableVisualStyles();
    Application.Run(new Form1());
  }
}

Form.Visible

    




using System.Windows.Forms;
   
class RunFormBadly
{
     public static void Main()
     {
          Form form = new Form();
   
          form.Text = "Not a Good Idea...";
          form.Visible = true;
   
          Application.Run();
     }
}

Form.Width

   

using System.Drawing;
using System.Windows.Forms;
   
class FormProperties
{
     public static void Main()
     {
          Form form = new Form();
   
          form.Width          *= 2;
   
          Application.Run(form);
     }
}

new Form()

   
using System;
using System.Drawing;
using System.Windows.Forms;
   
class InstantiateHelloWorld
{
     public static void Main()
     {
          Form form   = new Form();
          form.Text   = "Instantiate " + form.Text;
          form.Paint += new PaintEventHandler(MyPaintHandler);
   
          Application.Run(form);
     }
     static void MyPaintHandler(object objSender, PaintEventArgs pea)
     {
          Form     form = (Form)objSender;
          Graphics graphics = pea.Graphics;
   
          graphics.DrawString("Hello from InstantiateHelloWorld!", 
                          form.Font, Brushes.Black, 0, 100);
     }
}