Csharp/CSharp Tutorial/GUI Windows Forms

• ActiveX
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• ErrorProvider
• Event System
• EventArgs
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• FloatLayoutPanel
• Form
• Form Event
• Form Paint
• Form Properties
• Generic Event
• HelpProvider
• ImageList
• Internationalization
• Introduction
• KeyEvent
• Label
• LinkLabel
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• ListView
• ListViewItem
• MDI
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• NumericUpDown
• OpenFileDialog
• Password Field
• PictureBox
• Print Preview Dialog
• Print PrintDocument
• PrintDialog
• ProgressBar
• RadioButton
• Resource File
• Resx
• RichTextBox
• SaveFileDialog
• Screen capture
• ScrollBar
• Splitter
• StatusBar
• TabControl
• TableLayoutPanel
• TextBox
• Thread UI
• Timer
• ToolStripMenuItem
• Toolbar
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• Validation
• WebBrowser
• event

Create a font from FontFamily

using System;
using System.Drawing;
using System.Windows.Forms;
public class FontConstructor3 : Form
{
  public FontConstructor3()
  {
        Text = "Font Constructor";
    Size = new Size(350,200);
    FontFamily ff = new FontFamily("Times New Roman");
    Font fnt = new Font(ff, 12, FontStyle.Bold | FontStyle.Italic);
    Font = fnt;
    RichTextBox rtxt = new RichTextBox();
    rtxt.Text = "first line.\n" +
          "This is a second line of text.";
    rtxt.Text += "\nFont Name:\t" + Font.Name;
    rtxt.Text += "\nFont Family:\t" + Font.FontFamily;
    rtxt.Text += "\nFont Styles:\t" + Font.Style;
    rtxt.Text += "\nFont Size:\t" + Font.Size;
    rtxt.Text += "\nFont Height:\t" + Font.Height;
    rtxt.Text += "\nFont Units:\t" + Font.Unit;
    rtxt.Multiline = true;
    rtxt.Dock = DockStyle.Fill;
    rtxt.Parent = this;
  }
  static void Main() 
  {
    Application.Run(new FontConstructor3());
  }
}

Create a font from font name and size

using System;
using System.Drawing;
using System.Windows.Forms;
public class FontConstructor2 : Form
{
  public FontConstructor2()
  {
        Text = "Font Constructor";
    Size = new Size(350,200);
    Font fnt = new Font("Times New Roman", 10);
    fnt = new Font(fnt, FontStyle.Bold | FontStyle.Italic);
    Font = fnt;
    RichTextBox rtxt = new RichTextBox();
    rtxt.Text = "first line.\n" +
          "This is a second line of text.";
    rtxt.Text += "\nFont Name:\t" + Font.Name;
    rtxt.Text += "\nFont Family:\t" + Font.FontFamily;
    rtxt.Text += "\nFont Styles:\t" + Font.Style;
    rtxt.Text += "\nFont Size:\t" + Font.Size;
    rtxt.Text += "\nFont Height:\t" + Font.Height;
    rtxt.Text += "\nFont Units:\t" + Font.Unit;
    rtxt.Multiline = true;
    rtxt.Dock = DockStyle.Fill;
    rtxt.Parent = this;
  }
  static void Main() 
  {
    Application.Run(new FontConstructor2());
  }
}

Font Constructor: derive a font

using System;
using System.Drawing;
using System.Windows.Forms;
public class FontConstructor1 : Form
{
  public FontConstructor1()
  {
    Size = new Size(350,200);
    Font fnt = Font;
    fnt = new Font(fnt, FontStyle.Bold | FontStyle.Italic);
    Font = fnt;
    RichTextBox rtxt = new RichTextBox();
    rtxt.Text = "first line.\n" +
          "This is a second line of text.";
    rtxt.Text += "\nFont Name:\t" + Font.Name;
    rtxt.Text += "\nFont Family:\t" + Font.FontFamily;
    rtxt.Text += "\nFont Styles:\t" + Font.Style;
    rtxt.Text += "\nFont Size:\t" + Font.Size;
    rtxt.Text += "\nFont Height:\t" + Font.Height;
    rtxt.Text += "\nFont Units:\t" + Font.Unit;
    rtxt.Multiline = true;
    rtxt.Dock = DockStyle.Fill;
    rtxt.Parent = this;
  }
  static void Main() 
  {
    Application.Run(new FontConstructor1());
  }
}

FontDialog Apply event

using System;
using System.Drawing;
using System.Windows.Forms;
public class FontDialogFontApplyEvent : Form
{
  private Button btnChange;
  private Label lbl;
  private FontDialog fd;
  public FontDialogFontApplyEvent()
  {
    Size = new Size(350,200);
    btnChange = new Button();
    btnChange.Location = new Point(200,50);
    btnChange.Size = new Size(100,23);
    btnChange.Text = "Change";
    btnChange.Click += new System.EventHandler(btnChange_Click);
    btnChange.Parent = this;
    lbl = new Label();
    lbl.Text = "test";
    lbl.AutoSize = true;
    lbl.Parent = this;
  }
  static void Main() 
  {
    Application.Run(new FontDialogFontApplyEvent());
  }
  private void btnChange_Click(object sender, EventArgs e)
  {
    fd = new FontDialog();
    fd.ShowHelp = false;
    fd.ShowApply = true;
    fd.Apply += new System.EventHandler(this.fd_Apply);
    
    if (fd.ShowDialog() == DialogResult.OK)
      lbl.Font = fd.Font;
  }
  private void fd_Apply(object sender, System.EventArgs e)
  {
    lbl.Font = fd.Font;
  }
}

Font Dialog: Display and get selected font

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FontDialogDisplay : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  private System.Windows.Forms.FontDialog fontDlg = new System.Windows.Forms.FontDialog();    
  private Font currFont = new Font("Times New Roman", 12);
  public FontDialogDisplay()
  {
    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(292, 273);
    this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.FontDialogDisplay_MouseUp);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.FontDialogDisplay_Paint);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FontDialogDisplay());
  }
  private void FontDialogDisplay_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    g.DrawString("Testing...", currFont, new SolidBrush(Color.Black), 0, 0);  
  }
  private void FontDialogDisplay_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
  {
    if (fontDlg.ShowDialog() != DialogResult.Cancel)
    {
      currFont = fontDlg.Font;
      Invalidate();
    }
  }
}

FontDialog: set color, Apply event

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.Button button1;
    private System.Windows.Forms.Button button2;
    private System.Windows.Forms.Label label1;
    public Form1() {
        this.button1 = new System.Windows.Forms.Button();
        this.button2 = new System.Windows.Forms.Button();
        this.label1 = new System.Windows.Forms.Label();
        this.SuspendLayout();
        // 
        // button1
        // 
        this.button1.Location = new System.Drawing.Point(24, 8);
        this.button1.Name = "button1";
        this.button1.TabIndex = 0;
        this.button1.Text = "button1";
        this.button1.Click += new System.EventHandler(this.button1_Click_1);
        // 
        // button2
        // 
        this.button2.Location = new System.Drawing.Point(120, 8);
        this.button2.Name = "button2";
        this.button2.TabIndex = 1;
        this.button2.Text = "button2";
        this.button2.Click += new System.EventHandler(this.button2_Click);
        // 
        // label1
        // 
        this.label1.Location = new System.Drawing.Point(8, 48);
        this.label1.Name = "label1";
        this.label1.Size = new System.Drawing.Size(280, 48);
        this.label1.TabIndex = 2;
        this.label1.Text = "label1";
        // 
        // Form1
        // 
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(292, 101);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                      this.label1,
                                      this.button2,
                                      this.button1});
        this.ResumeLayout(false);
        this.Text = "Font and Color Dialogs";
        this.button1.Text = "&Font";
        this.button2.Text = "&Color";
        this.label1.Text = "Change my FONT and COLOR!";
    }
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }
    private void button2_Click(object sender, System.EventArgs e) {
        ColorDialog cd = new ColorDialog();
        cd.AllowFullOpen = true; 
        cd.FullOpen = true;   
        cd.Color = Color.DarkBlue; 
        //cd.Color = Color.Blue;   
        if (cd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            this.label1.ForeColor = cd.Color;
    }
    private void button1_Click_1(object sender, System.EventArgs e) {
        FontDialog fd = new FontDialog();
        fd.ShowColor = true;
        fd.Color = Color.Blue;
        fd.ShowApply = true;
        fd.Apply += new EventHandler(ApplyFont);
        if (fd.ShowDialog() != System.Windows.Forms.DialogResult.Cancel)
            ChangeFont(fd);
    }
    private void ApplyFont(object o, EventArgs ea) {
        ChangeFont((FontDialog)o);
    }
    private void ChangeFont(FontDialog fd) {
        this.label1.Font = fd.Font;
        this.label1.ForeColor = fd.Color;
    }
}

Font list form

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Text;
using System.Collections.Generic;
public class FontListForm : Form
{
    public FontListForm()
    {
        InitializeComponent();
    }
    private void FontListForm_Load(object sender, EventArgs e)
    {
        using (InstalledFontCollection fontFamilies = new InstalledFontCollection())
        {
            int offset = 10;
            foreach (FontFamily family in fontFamilies.Families)
            {
                try
                {
                    Label fontLabel = new Label();
                    fontLabel.Text = family.Name;
                    fontLabel.Font = new Font(family, 14);
                    fontLabel.Left = 10;
                    fontLabel.Width = pnlFonts.Width;
                    fontLabel.Top = offset;
                    pnlFonts.Controls.Add(fontLabel);
                    offset += 30;
                }catch{}
            }
        }
    }
    private System.ruponentModel.IContainer components = null;
    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }
    private void InitializeComponent()
    {
        this.pnlFonts = new System.Windows.Forms.Panel();
        this.SuspendLayout();
        this.pnlFonts.AutoScroll = true;
        this.pnlFonts.Dock = System.Windows.Forms.DockStyle.Fill;
        this.pnlFonts.Location = new System.Drawing.Point(0, 0);
        this.pnlFonts.Name = "pnlFonts";
        this.pnlFonts.Size = new System.Drawing.Size(299, 276);
        this.pnlFonts.TabIndex = 0;
        this.ClientSize = new System.Drawing.Size(299, 276);
        this.Controls.Add(this.pnlFonts);
        this.Name = "FontListForm";
        this.Text = "List of Installed Fonts";
        this.Load += new System.EventHandler(this.FontListForm_Load);
        this.ResumeLayout(false);
    }
    private System.Windows.Forms.Panel pnlFonts;
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new FontListForm());
    }
    
}

Font Properties

using System;
using System.Drawing;
using System.Windows.Forms;
public class FontProperties : Form
{
  private Button btnChange;
  private Label lbl;
  private FontDialog fd;
  public FontProperties()
  {
    Size = new Size(350,200);
    btnChange = new Button();
    btnChange.Location = new Point(200,50);
    btnChange.Size = new Size(100,23);
    btnChange.Text = "Change";
    btnChange.Click += new System.EventHandler(btnChange_Click);
    btnChange.Parent = this;
    lbl = new Label();
    lbl.Text = "test";
    lbl.AutoSize = true;
    lbl.Parent = this;
  }
  static void Main() 
  {
    Application.Run(new FontProperties());
  }
  private void btnChange_Click(object sender, EventArgs e)
  {
    fd = new FontDialog();
    fd.ShowHelp = false;
    fd.ShowApply = true;
    fd.Apply += new System.EventHandler(this.fd_Apply);
    
    if (fd.ShowDialog() == DialogResult.OK)
      lbl.Font = fd.Font;
    MessageBox.Show("Label Font:\t" + lbl.Font.ToString() + "\n" +
      "Label Font Family:\t" + lbl.Font.FontFamily.ToString() + "\n" + 
      "Label Font Style:\t" + lbl.Font.Style.ToString() + "\n" + 
      "Label Font Unit:\t" + lbl.Font.Unit.ToString() + "\n" +
      "Label Font Height:\t" + lbl.Font.Height.ToString() + "\n",
      "Font Properties");
  }
  private void fd_Apply(object sender, System.EventArgs e)
  {
    lbl.Font = fd.Font;
  }
}

List all Font Families

using System;
using System.Drawing;
using System.Windows.Forms;
public class FontFamilies : Form
{
  public FontFamilies()
  {
    Size = new Size(350,200);
    RichTextBox rtxt = new RichTextBox();
    rtxt.Multiline = true;
    rtxt.Dock = DockStyle.Fill;
    rtxt.Parent = this;
    FontFamily[] ffArray = FontFamily.Families;
    foreach( FontFamily ff in ffArray )
    {
      if (ff.IsStyleAvailable(FontStyle.Regular))
      {
        rtxt.Text += ff.Name + "\n"; 
      }
    }
  }
  static void Main() 
  {
    Application.Run(new FontFamilies());
  }
}

RichTextBox: Multiline

using System;
using System.Drawing;
using System.Windows.Forms;
public class FontConstructor1 : Form
{
  public FontConstructor1()
  {
    Size = new Size(350,200);
    Font fnt = Font;
    fnt = new Font(fnt, FontStyle.Bold | FontStyle.Italic);
    Font = fnt;
    RichTextBox rtxt = new RichTextBox();
    rtxt.Text = "first line.\n" +
          "This is a second line of text.";
    rtxt.Text += "\nFont Name:\t" + Font.Name;
    rtxt.Text += "\nFont Family:\t" + Font.FontFamily;
    rtxt.Text += "\nFont Styles:\t" + Font.Style;
    rtxt.Text += "\nFont Size:\t" + Font.Size;
    rtxt.Text += "\nFont Height:\t" + Font.Height;
    rtxt.Text += "\nFont Units:\t" + Font.Unit;
    rtxt.Multiline = true;
    rtxt.Dock = DockStyle.Fill;
    rtxt.Parent = this;
  }
  static void Main() 
  {
    Application.Run(new FontConstructor1());
  }
}

Set the label font to a font selected from a FontDialog

using System;
using System.ruponentModel;
using System.Drawing;
using System.Windows.Forms;
public class FontPickerDemo  : Form
{
    Button b;
    Label l;
    void OnApply(Object sender,System.EventArgs e)
    {
        FontDialog dlg = (FontDialog)sender;
        l.Font=dlg.Font;
    }
    void OnClickedb(Object sender,EventArgs e)
    {
        FontDialog dlg=new FontDialog();
        dlg.Font = l.Font;
        dlg.ShowApply = true;
        dlg.Apply += new EventHandler(OnApply);
        if(dlg.ShowDialog() != DialogResult.Cancel)
        {
            l.Font = dlg.Font;
        }
    }
    public FontPickerDemo()
    {
        this.Size=new Size(416,320);
        l=new Label();
        l.Location = new Point(8,8);
        l.Size = new Size(400,200);
        l.Text = "nabcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        l.Font = new Font("Microsoft Sans Serif", 18f);
        this.Controls.Add(l);
        b=new Button();
        b.Text = "Choose Font";
        b.Click += new EventHandler(OnClickedb);
        b.Location = new Point(8,250);
        b.Size = new Size(400,32);
        this.Controls.Add(b);
    }
    static void Main()
    {
        Application.Run(new FontPickerDemo());
    }
}

Show Font Dialog Help

using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class FontDialogDisplayHelp : System.Windows.Forms.Form
{
  private System.ruponentModel.Container components = null;
  private System.Windows.Forms.FontDialog fontDlg = new System.Windows.Forms.FontDialog();    
  private Font currFont = new Font("Times New Roman", 12);
  public FontDialogDisplayHelp()
  {
    InitializeComponent();
    fontDlg.ShowHelp = true;    
  }
  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.MouseUp += new System.Windows.Forms.MouseEventHandler(this.FontDialogDisplayHelp_MouseUp);
    this.Paint += new System.Windows.Forms.PaintEventHandler(this.FontDialogDisplayHelp_Paint);
  }
  [STAThread]
  static void Main() 
  {
    Application.Run(new FontDialogDisplayHelp());
  }
  private void FontDialogDisplayHelp_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {
    Graphics g = e.Graphics;
    g.DrawString("Testing...", currFont, new SolidBrush(Color.Black), 0, 0);  
  }
  private void FontDialogDisplayHelp_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
  {
    if (fontDlg.ShowDialog() != DialogResult.Cancel)
    {
      currFont = fontDlg.Font;
      Invalidate();
    }
  }
}

Use GraphicsUnit to create font

using System;
using System.Drawing;
using System.Windows.Forms;
public class FontConstructor4 : Form
{
  public FontConstructor4()
  {
    Size = new Size(350,200);
    FontFamily ff = new FontFamily("Times New Roman");
    Font fnt = new Font(ff, .25f, GraphicsUnit.Inch);
    Font = fnt;
    RichTextBox rtxt = new RichTextBox();
    rtxt.Text = "first line.\n" +
          "This is a second line of text.";
    rtxt.Text += "\nFont Name:\t" + Font.Name;
    rtxt.Text += "\nFont Family:\t" + Font.FontFamily;
    rtxt.Text += "\nFont Styles:\t" + Font.Style;
    rtxt.Text += "\nFont Size:\t" + Font.Size;
    rtxt.Text += "\nFont Height:\t" + Font.Height;
    rtxt.Text += "\nFont Units:\t" + Font.Unit;
    rtxt.Multiline = true;
    rtxt.Dock = DockStyle.Fill;
    rtxt.Parent = this;
  }
  static void Main() 
  {
    Application.Run(new FontConstructor4());
  }
}