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

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extends PictureBox

<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;

class PictureBoxPlusDemo: Form {

    public static void Main()
    {
         Application.Run(new PictureBoxPlusDemo());
    }
    public PictureBoxPlusDemo()
    {
         Text = "PictureBoxPlus Demo";
  
         PictureBoxPlus picbox = new PictureBoxPlus();
         picbox.Parent = this;
         picbox.Dock = DockStyle.Fill;
         picbox.Image = Image.FromFile("Color.jpg");
    }

}

    class PictureBoxPlus: PictureBox
    {
         protected override void OnPaint(PaintEventArgs pea)
         {
              ScaleImageIsotropically(pea.Graphics, Image,ClientRectangle);
         }
         void ScaleImageIsotropically(Graphics grfx, Image image,
                                      Rectangle rect)
         {
              SizeF sizef = 
                   new SizeF(image.Width / image.HorizontalResolution,
                             image.Height / image.VerticalResolution);
  
              float fScale = Math.Min(rect.Width  / sizef.Width,
                                      rect.Height / sizef.Height);
  
              sizef.Width  *= fScale;
              sizef.Height *= fScale;
         
              grfx.DrawImage(image,
                             rect.X + (rect.Width  - sizef.Width ) / 2,
                             rect.Y + (rect.Height - sizef.Height) / 2,
                             sizef.Width, sizef.Height);
         }
    }
  
   
 </source>


PictureBox.BorderStyle

<source lang="csharp">

  using System;
  using System.Drawing;
  using System.Collections;
  using System.ruponentModel;
  using System.Windows.Forms;
  using System.Data;
  using System.IO;
  public class PictureBoxTest : System.Windows.Forms.Form
  {
     private System.Windows.Forms.PictureBox imagePictureBox;
     private System.Windows.Forms.Label promptLabel;
     public PictureBoxTest()
     {
        InitializeComponent();
     }
     private void InitializeComponent()
     {
        this.promptLabel = new System.Windows.Forms.Label();
        this.imagePictureBox = new System.Windows.Forms.PictureBox();
        this.SuspendLayout();
        this.promptLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
        this.promptLabel.Location = new System.Drawing.Point(22, 8);
        this.promptLabel.Name = "promptLabel";
        this.promptLabel.Size = new System.Drawing.Size(124, 56);
        this.promptLabel.TabIndex = 0;
        this.promptLabel.Text = "Click On PictureBox to View Images";
        this.promptLabel.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
        this.imagePictureBox.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
        this.imagePictureBox.Location = new System.Drawing.Point(34, 72);
        this.imagePictureBox.Name = "imagePictureBox";
        this.imagePictureBox.Size = new System.Drawing.Size(100, 100);
        this.imagePictureBox.TabIndex = 1;
        this.imagePictureBox.TabStop = false;
        this.imagePictureBox.Click += new System.EventHandler(this.imagePictureBox_Click );
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(168, 189);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {this.imagePictureBox,
                                                                     this.promptLabel});
        this.Text = "PictureBoxTest";
        this.ResumeLayout(false);
     }
     [STAThread]
     static void Main() 
     {
        Application.Run( new PictureBoxTest() );
     }
     private void imagePictureBox_Click(object sender, System.EventArgs e )
     {
        imagePictureBox.Image = Image.FromFile(Directory.GetCurrentDirectory() + "\\winter.jpg" );
     }
  }
  
   
 </source>


PictureBox.Cursor

<source lang="csharp">

 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 bool  isDragging = false;
   private int   currentX, currentY;
   Rectangle dropRect = new Rectangle(180, 180, 60, 60);
   private PictureBox myPictureBox; 
   public Form1()
   {
     InitializeComponent();
     CenterToScreen();
     myPictureBox = new PictureBox();
     myPictureBox.SizeMode = PictureBoxSizeMode.StretchImage;
     myPictureBox.Location = new System.Drawing.Point(64, 32);
     myPictureBox.Size = new System.Drawing.Size(50, 50);
     myPictureBox.Image = new Bitmap("winter.jpg");
     myPictureBox.MouseDown += new MouseEventHandler(myPictureBox_MouseDown);
     myPictureBox.MouseUp += new MouseEventHandler(myPictureBox_MouseUp);
     myPictureBox.MouseMove += new MouseEventHandler(myPictureBox_MouseMove);
     myPictureBox.Cursor = Cursors.Hand;
     Controls.Add(myPictureBox);
   }
   private void InitializeComponent()
   {
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(292, 273);
     this.Text = "Dragging Images";
     this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
   }
   static void Main() 
   {
     Application.Run(new Form1());
   }
   private void myPictureBox_MouseDown(object sender, MouseEventArgs e) 
   {
     isDragging = true;
     currentX = e.X;
     currentY = e.Y;
   }
   private void myPictureBox_MouseMove(object sender, MouseEventArgs e) {
     if (isDragging) {
       myPictureBox.Top = myPictureBox.Top + (e.Y - currentY);
       myPictureBox.Left = myPictureBox.Left + (e.X - currentX);
     }
   }
   private void myPictureBox_MouseUp(object sender, MouseEventArgs e) 
   {
     isDragging = false;
     Console.WriteLine(dropRect.Contains(myPictureBox.Bounds));
   }
   private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
   {
     Graphics g = e.Graphics;
     g.FillRectangle(Brushes.AntiqueWhite, dropRect);
     g.DrawString("Drag and drop the image here.", new Font("Times New Roman", 8), Brushes.Red, dropRect);
   }
 }
  
   
 </source>


PictureBox.DoubleClick

<source lang="csharp"> 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.GroupBox GroupBox1;
   private System.Windows.Forms.Label Label4;
   private System.Windows.Forms.Label Label1;
   private System.Windows.Forms.PictureBox pic;
   private System.Windows.Forms.TextBox txt;
   private System.Windows.Forms.Button cmd;
   private System.Windows.Forms.Label Label2;
   private System.Windows.Forms.Label Label3;
   private System.Windows.Forms.ListBox eventLogList;
   public Form1() {
       InitializeComponent();
   }
   private void Log(String data)
   {
       eventLogList.Items.Add(data);
       int itemsPerPage = (int)(eventLogList.Height / eventLogList.ItemHeight);
       eventLogList.TopIndex = eventLogList.Items.Count - itemsPerPage;
   }
   private void txt_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
   {
       Log("Key Down: " + e.KeyCode.ToString() + e.KeyValue.ToString());
   }
   private void txt_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
   {
       Log("Key Press: " + e.KeyChar.ToString());
   }
   private void txt_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
   {
       Log("Key Up: " + e.KeyCode.ToString() + e.KeyValue.ToString() + " Text is: " + txt.Text);
   }
   private void txt_TextChanged(object sender, System.EventArgs e)
   {
       Log("Changed: " + " Text is: " + txt.Text);
   }
   private void pic_MouseEnter(object sender, System.EventArgs e)
   {
       Log("Mouse Enter");
   }
   private void pic_MouseHover(object sender, System.EventArgs e)
   {
       Log("Mouse Hover");
   }
   private void pic_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
   {
       Log("Mouse Down: X=" + e.X.ToString() + " Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
   }
   private void pic_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
   {
       Log("Mouse Up: X=" + e.X.ToString() + " Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
   }
   private void pic_Click(object sender, System.EventArgs e)
   {
       Log("Click");
   }
   private void pic_DoubleClick(object sender, System.EventArgs e)
   {
       Log("Double Click");
   }
   private void pic_MouseLeave(object sender, System.EventArgs e)
   {
       Log("Mouse Leave");
   }
   private void InitializeComponent()
   {
       this.GroupBox1 = new System.Windows.Forms.GroupBox();
       this.Label4 = new System.Windows.Forms.Label();
       this.Label1 = new System.Windows.Forms.Label();
       this.pic = new System.Windows.Forms.PictureBox();
       this.txt = new System.Windows.Forms.TextBox();
       this.cmd = new System.Windows.Forms.Button();
       this.Label2 = new System.Windows.Forms.Label();
       this.Label3 = new System.Windows.Forms.Label();
       this.eventLogList = new System.Windows.Forms.ListBox();
       this.GroupBox1.SuspendLayout();
       ((System.ruponentModel.ISupportInitialize)(this.pic)).BeginInit();
       this.SuspendLayout();
       // 
       // GroupBox1
       // 
       this.GroupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.GroupBox1.Controls.Add(this.Label4);
       this.GroupBox1.Controls.Add(this.Label1);
       this.GroupBox1.Controls.Add(this.pic);
       this.GroupBox1.Controls.Add(this.txt);
       this.GroupBox1.Controls.Add(this.cmd);
       this.GroupBox1.Controls.Add(this.Label2);
       this.GroupBox1.FlatStyle = System.Windows.Forms.FlatStyle.System;
       this.GroupBox1.Location = new System.Drawing.Point(7, 0);
       this.GroupBox1.Name = "GroupBox1";
       this.GroupBox1.Size = new System.Drawing.Size(384, 148);
       this.GroupBox1.TabIndex = 12;
       this.GroupBox1.TabStop = false;
       // 
       // Label4
       // 
       this.Label4.Location = new System.Drawing.Point(92, 108);
       this.Label4.Name = "Label4";
       this.Label4.Size = new System.Drawing.Size(56, 16);
       this.Label4.TabIndex = 5;
       this.Label4.Text = "And here:";
       // 
       // Label1
       // 
       this.Label1.Location = new System.Drawing.Point(6, 24);
       this.Label1.Name = "Label1";
       this.Label1.Size = new System.Drawing.Size(144, 16);
       this.Label1.TabIndex = 2;
       this.Label1.Text = "Test keyboard events here:";
       // 
       // pic
       // 
       this.pic.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
       this.pic.Location = new System.Drawing.Point(156, 48);
       this.pic.Name = "pic";
       this.pic.Size = new System.Drawing.Size(192, 48);
       this.pic.TabIndex = 3;
       this.pic.TabStop = false;
       this.pic.DoubleClick += new System.EventHandler(this.pic_DoubleClick);
       this.pic.Click += new System.EventHandler(this.pic_Click);
       this.pic.MouseHover += new System.EventHandler(this.pic_MouseHover);
       this.pic.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
       this.pic.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
       this.pic.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
       // 
       // txt
       // 
       this.txt.Location = new System.Drawing.Point(156, 20);
       this.txt.Name = "txt";
       this.txt.Size = new System.Drawing.Size(192, 21);
       this.txt.TabIndex = 1;
       this.txt.KeyUp += new System.Windows.Forms.KeyEventHandler(this.txt_KeyUp);
       this.txt.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txt_KeyPress);
       this.txt.TextChanged += new System.EventHandler(this.txt_TextChanged);
       this.txt.KeyDown += new System.Windows.Forms.KeyEventHandler(this.txt_KeyDown);
       // 
       // cmd
       // 
       this.cmd.FlatStyle = System.Windows.Forms.FlatStyle.System;
       this.cmd.Location = new System.Drawing.Point(156, 100);
       this.cmd.Name = "cmd";
       this.cmd.Size = new System.Drawing.Size(88, 28);
       this.cmd.TabIndex = 4;
       this.cmd.Text = "Button1";
       this.cmd.MouseLeave += new System.EventHandler(this.pic_MouseLeave);
       this.cmd.Click += new System.EventHandler(this.pic_Click);
       this.cmd.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
       this.cmd.MouseHover += new System.EventHandler(this.pic_MouseHover);
       this.cmd.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
       this.cmd.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
       // 
       // Label2
       // 
       this.Label2.Location = new System.Drawing.Point(20, 52);
       this.Label2.Name = "Label2";
       this.Label2.Size = new System.Drawing.Size(128, 16);
       this.Label2.TabIndex = 2;
       this.Label2.Text = "Test mouse events here:";
       // 
       // Label3
       // 
       this.Label3.Location = new System.Drawing.Point(23, 100);
       this.Label3.Name = "Label3";
       this.Label3.Size = new System.Drawing.Size(64, 24);
       this.Label3.TabIndex = 11;
       this.Label3.Text = "Label3";
       // 
       // eventLogList
       // 
       this.eventLogList.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                   | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.eventLogList.FormattingEnabled = true;
       this.eventLogList.IntegralHeight = false;
       this.eventLogList.Location = new System.Drawing.Point(7, 156);
       this.eventLogList.Name = "eventLogList";
       this.eventLogList.Size = new System.Drawing.Size(384, 212);
       this.eventLogList.TabIndex = 10;
       // 
       // Form1
       // 
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(399, 374);
       this.Controls.Add(this.GroupBox1);
       this.Controls.Add(this.Label3);
       this.Controls.Add(this.eventLogList);
       this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
       this.Name = "Form1";
       this.Text = "Event Tracker";
       this.GroupBox1.ResumeLayout(false);
       this.GroupBox1.PerformLayout();
       ((System.ruponentModel.ISupportInitialize)(this.pic)).EndInit();
       this.ResumeLayout(false);
   }
   [STAThread]
   static void Main()
   {
       Application.EnableVisualStyles();
       Application.Run(new Form1());
   }

}


 </source>


PictureBox.Image

<source lang="csharp"> /* GDI+ Programming in C# and VB .NET by Nick Symmonds Publisher: Apress ISBN: 159059035X

  • /

using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace PicControls {

   /// <summary>
   /// Summary description for PicControls.
   /// </summary>
   public class PicControls : System.Windows.Forms.Form
   {
       private System.Windows.Forms.PictureBox p;
       private System.Windows.Forms.Panel PicPanel;
       /// <summary>
       /// Required designer variable.
       /// </summary>
       private System.ruponentModel.Container components = null;
       public PicControls()
       {
           //
           // 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.p = new System.Windows.Forms.PictureBox();
     this.PicPanel = new System.Windows.Forms.Panel();
     this.SuspendLayout();
     // 
     // p
     // 
     this.p.Location = new System.Drawing.Point(32, 40);
     this.p.Name = "p";
     this.p.Size = new System.Drawing.Size(136, 104);
     this.p.TabIndex = 0;
     this.p.TabStop = false;
     // 
     // PicPanel
     // 
     this.PicPanel.Location = new System.Drawing.Point(200, 120);
     this.PicPanel.Name = "PicPanel";
     this.PicPanel.Size = new System.Drawing.Size(200, 184);
     this.PicPanel.TabIndex = 1;
     // 
     // PicControls
     // 
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(424, 349);
     this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                 this.PicPanel,
                                                                 this.p});
     this.Name = "PicControls";
     this.Text = "PicControls";
     this.Load += new System.EventHandler(this.PicControls_Load);
     this.ResumeLayout(false);
   }
       #endregion
       /// <summary>
       /// The main entry point for the application.
       /// </summary>
       [STAThread]
       static void Main() 
       {
           Application.Run(new PicControls());
       }
   private void PicControls_Load(object sender, System.EventArgs e)
   {
     Bitmap b = new Bitmap("crane.jpg");
     //PictureBox is "p"
     p.Image = (Image)b;
   }


   }

}


 </source>


PictureBox.MouseDown

<source lang="csharp">

 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 bool  isDragging = false;
   private int   currentX, currentY;
   Rectangle dropRect = new Rectangle(180, 180, 60, 60);
   private PictureBox myPictureBox; 
   public Form1()
   {
     InitializeComponent();
     CenterToScreen();
     myPictureBox = new PictureBox();
     myPictureBox.SizeMode = PictureBoxSizeMode.StretchImage;
     myPictureBox.Location = new System.Drawing.Point(64, 32);
     myPictureBox.Size = new System.Drawing.Size(50, 50);
     myPictureBox.Image = new Bitmap("winter.jpg");
     myPictureBox.MouseDown += new MouseEventHandler(myPictureBox_MouseDown);
     myPictureBox.MouseUp += new MouseEventHandler(myPictureBox_MouseUp);
     myPictureBox.MouseMove += new MouseEventHandler(myPictureBox_MouseMove);
     myPictureBox.Cursor = Cursors.Hand;
     Controls.Add(myPictureBox);
   }
   private void InitializeComponent()
   {
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(292, 273);
     this.Text = "Dragging Images";
     this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
   }
   static void Main() 
   {
     Application.Run(new Form1());
   }
   private void myPictureBox_MouseDown(object sender, MouseEventArgs e) 
   {
     isDragging = true;
     currentX = e.X;
     currentY = e.Y;
   }
   private void myPictureBox_MouseMove(object sender, MouseEventArgs e) {
     if (isDragging) {
       myPictureBox.Top = myPictureBox.Top + (e.Y - currentY);
       myPictureBox.Left = myPictureBox.Left + (e.X - currentX);
     }
   }
   private void myPictureBox_MouseUp(object sender, MouseEventArgs e) 
   {
     isDragging = false;
     Console.WriteLine(dropRect.Contains(myPictureBox.Bounds));
   }
   private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
   {
     Graphics g = e.Graphics;
     g.FillRectangle(Brushes.AntiqueWhite, dropRect);
     g.DrawString("Drag and drop the image here.", new Font("Times New Roman", 8), Brushes.Red, dropRect);
   }
 }
  
   
 </source>


PictureBox.MouseEnter

<source lang="csharp">

using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace EventTracker {

   /// <summary>
   /// Summary description for EventTracker.
   /// </summary>
   public class EventTracker : System.Windows.Forms.Form
   {
       internal System.Windows.Forms.GroupBox GroupBox1;
       internal System.Windows.Forms.Label Label4;
       internal System.Windows.Forms.Label Label1;
       internal System.Windows.Forms.PictureBox pic;
       internal System.Windows.Forms.TextBox txt;
       internal System.Windows.Forms.Button cmd;
       internal System.Windows.Forms.Label Label2;
       internal System.Windows.Forms.Label Label3;
       internal System.Windows.Forms.ListBox lstLog;
       /// <summary>
       /// Required designer variable.
       /// </summary>
       private System.ruponentModel.Container components = null;
       public EventTracker()
       {
           //
           // 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.GroupBox1 = new System.Windows.Forms.GroupBox();
           this.Label4 = new System.Windows.Forms.Label();
           this.Label1 = new System.Windows.Forms.Label();
           this.pic = new System.Windows.Forms.PictureBox();
           this.txt = new System.Windows.Forms.TextBox();
           this.cmd = new System.Windows.Forms.Button();
           this.Label2 = new System.Windows.Forms.Label();
           this.Label3 = new System.Windows.Forms.Label();
           this.lstLog = new System.Windows.Forms.ListBox();
           this.GroupBox1.SuspendLayout();
           this.SuspendLayout();
           // 
           // GroupBox1
           // 
           this.GroupBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
               | System.Windows.Forms.AnchorStyles.Right);
           this.GroupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                                   this.Label4,
                                                                                   this.Label1,
                                                                                   this.pic,
                                                                                   this.txt,
                                                                                   this.cmd,
                                                                                   this.Label2});
           this.GroupBox1.FlatStyle = System.Windows.Forms.FlatStyle.System;
           this.GroupBox1.Location = new System.Drawing.Point(8, 5);
           this.GroupBox1.Name = "GroupBox1";
           this.GroupBox1.Size = new System.Drawing.Size(384, 148);
           this.GroupBox1.TabIndex = 9;
           this.GroupBox1.TabStop = false;
           // 
           // Label4
           // 
           this.Label4.Location = new System.Drawing.Point(92, 108);
           this.Label4.Name = "Label4";
           this.Label4.Size = new System.Drawing.Size(56, 16);
           this.Label4.TabIndex = 5;
           this.Label4.Text = "And here:";
           // 
           // Label1
           // 
           this.Label1.Location = new System.Drawing.Point(6, 24);
           this.Label1.Name = "Label1";
           this.Label1.Size = new System.Drawing.Size(144, 16);
           this.Label1.TabIndex = 2;
           this.Label1.Text = "Test keyboard events here:";
           // 
           // pic
           // 
           this.pic.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
           this.pic.Location = new System.Drawing.Point(156, 48);
           this.pic.Name = "pic";
           this.pic.Size = new System.Drawing.Size(192, 48);
           this.pic.TabIndex = 3;
           this.pic.TabStop = false;
           this.pic.Click += new System.EventHandler(this.pic_Click);
           this.pic.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
           this.pic.MouseHover += new System.EventHandler(this.pic_MouseHover);
           this.pic.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
           this.pic.DoubleClick += new System.EventHandler(this.pic_DoubleClick);
           this.pic.MouseLeave += new System.EventHandler(this.pic_MouseLeave);
           this.pic.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
           // 
           // txt
           // 
           this.txt.Location = new System.Drawing.Point(156, 20);
           this.txt.Name = "txt";
           this.txt.Size = new System.Drawing.Size(192, 21);
           this.txt.TabIndex = 1;
           this.txt.Text = "";
           this.txt.KeyDown += new System.Windows.Forms.KeyEventHandler(this.txt_KeyDown);
           this.txt.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txt_KeyPress);
           this.txt.TextChanged += new System.EventHandler(this.txt_TextChanged);
           this.txt.KeyUp += new System.Windows.Forms.KeyEventHandler(this.txt_KeyUp);
           // 
           // cmd
           // 
           this.cmd.FlatStyle = System.Windows.Forms.FlatStyle.System;
           this.cmd.Location = new System.Drawing.Point(156, 100);
           this.cmd.Name = "cmd";
           this.cmd.Size = new System.Drawing.Size(88, 28);
           this.cmd.TabIndex = 4;
           this.cmd.Text = "Button1";
           this.cmd.Click += new System.EventHandler(this.pic_Click);
           this.cmd.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
           this.cmd.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
           this.cmd.MouseHover += new System.EventHandler(this.pic_MouseHover);
           this.cmd.MouseLeave += new System.EventHandler(this.pic_MouseLeave);
           this.cmd.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
           // 
           // Label2
           // 
           this.Label2.Location = new System.Drawing.Point(20, 52);
           this.Label2.Name = "Label2";
           this.Label2.Size = new System.Drawing.Size(128, 16);
           this.Label2.TabIndex = 2;
           this.Label2.Text = "Test mouse events here:";
           // 
           // Label3
           // 
           this.Label3.Location = new System.Drawing.Point(24, 105);
           this.Label3.Name = "Label3";
           this.Label3.Size = new System.Drawing.Size(64, 24);
           this.Label3.TabIndex = 8;
           this.Label3.Text = "Label3";
           // 
           // lstLog
           // 
           this.lstLog.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
               | System.Windows.Forms.AnchorStyles.Left) 
               | System.Windows.Forms.AnchorStyles.Right);
           this.lstLog.IntegralHeight = false;
           this.lstLog.Location = new System.Drawing.Point(8, 161);
           this.lstLog.Name = "lstLog";
           this.lstLog.Size = new System.Drawing.Size(384, 212);
           this.lstLog.TabIndex = 7;
           // 
           // EventTracker
           // 
           this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
           this.ClientSize = new System.Drawing.Size(400, 378);
           this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                         this.GroupBox1,
                                                                         this.Label3,
                                                                         this.lstLog});
           this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
           this.Name = "EventTracker";
           this.Text = "Event Tracker";
           this.GroupBox1.ResumeLayout(false);
           this.ResumeLayout(false);
       }
       #endregion
       private void Log(String data)
       {
           lstLog.Items.Add(data);
           int itemsPerPage = (int)(lstLog.Height / lstLog.ItemHeight);
           lstLog.TopIndex = lstLog.Items.Count - itemsPerPage;
       }
                                                                                                   
       /// <summary>
       /// The main entry point for the application.
       /// </summary>
       [STAThread]
       static void Main() 
       {
           Application.Run(new EventTracker());
       }
       private void txt_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
       {
           Log("Key Down: " + e.KeyCode.ToString() + e.KeyValue.ToString());
       }
       private void txt_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
       {
           Log("Key Press: " + e.KeyChar.ToString());
       }
       private void txt_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
       {
           Log("Key Up: " + e.KeyCode.ToString() + e.KeyValue.ToString() + " Text is: " + txt.Text);
       }
       private void txt_TextChanged(object sender, System.EventArgs e)
       {
           Log("Changed: " + " Text is: " + txt.Text);
       }
       private void pic_MouseEnter(object sender, System.EventArgs e)
       {
           Log("Mouse Enter");
       }
       private void pic_MouseHover(object sender, System.EventArgs e)
       {
           Log("Mouse Hover");
       }
       private void pic_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
       {
           Log("Mouse Down: X=" + e.X.ToString() + "Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
       }
       private void pic_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
       {
           Log("Mouse Down: X=" + e.X.ToString() + "Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
       }
       private void pic_Click(object sender, System.EventArgs e)
       {
           Log("Click");
       }
       private void pic_DoubleClick(object sender, System.EventArgs e)
       {
           Log("Double Click");
       }
       private void pic_MouseLeave(object sender, System.EventArgs e)
       {
           Log("Mouse Leave");
       }
   }

}


 </source>


PictureBox.MouseMove

<source lang="csharp">

 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 bool  isDragging = false;
   private int   currentX, currentY;
   Rectangle dropRect = new Rectangle(180, 180, 60, 60);
   private PictureBox myPictureBox; 
   public Form1()
   {
     InitializeComponent();
     CenterToScreen();
     myPictureBox = new PictureBox();
     myPictureBox.SizeMode = PictureBoxSizeMode.StretchImage;
     myPictureBox.Location = new System.Drawing.Point(64, 32);
     myPictureBox.Size = new System.Drawing.Size(50, 50);
     myPictureBox.Image = new Bitmap("winter.jpg");
     myPictureBox.MouseDown += new MouseEventHandler(myPictureBox_MouseDown);
     myPictureBox.MouseUp += new MouseEventHandler(myPictureBox_MouseUp);
     myPictureBox.MouseMove += new MouseEventHandler(myPictureBox_MouseMove);
     myPictureBox.Cursor = Cursors.Hand;
     Controls.Add(myPictureBox);
   }
   private void InitializeComponent()
   {
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(292, 273);
     this.Text = "Dragging Images";
     this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
   }
   static void Main() 
   {
     Application.Run(new Form1());
   }
   private void myPictureBox_MouseDown(object sender, MouseEventArgs e) 
   {
     isDragging = true;
     currentX = e.X;
     currentY = e.Y;
   }
   private void myPictureBox_MouseMove(object sender, MouseEventArgs e) {
     if (isDragging) {
       myPictureBox.Top = myPictureBox.Top + (e.Y - currentY);
       myPictureBox.Left = myPictureBox.Left + (e.X - currentX);
     }
   }
   private void myPictureBox_MouseUp(object sender, MouseEventArgs e) 
   {
     isDragging = false;
     Console.WriteLine(dropRect.Contains(myPictureBox.Bounds));
   }
   private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
   {
     Graphics g = e.Graphics;
     g.FillRectangle(Brushes.AntiqueWhite, dropRect);
     g.DrawString("Drag and drop the image here.", new Font("Times New Roman", 8), Brushes.Red, dropRect);
   }
 }
  
   
 </source>


PictureBox.MouseUp

<source lang="csharp"> 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.GroupBox GroupBox1;
   private System.Windows.Forms.Label Label4;
   private System.Windows.Forms.Label Label1;
   private System.Windows.Forms.PictureBox pic;
   private System.Windows.Forms.TextBox txt;
   private System.Windows.Forms.Button cmd;
   private System.Windows.Forms.Label Label2;
   private System.Windows.Forms.Label Label3;
   private System.Windows.Forms.ListBox eventLogList;
   public Form1() {
       InitializeComponent();
   }
   private void Log(String data)
   {
       eventLogList.Items.Add(data);
       int itemsPerPage = (int)(eventLogList.Height / eventLogList.ItemHeight);
       eventLogList.TopIndex = eventLogList.Items.Count - itemsPerPage;
   }
   private void txt_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
   {
       Log("Key Down: " + e.KeyCode.ToString() + e.KeyValue.ToString());
   }
   private void txt_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
   {
       Log("Key Press: " + e.KeyChar.ToString());
   }
   private void txt_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
   {
       Log("Key Up: " + e.KeyCode.ToString() + e.KeyValue.ToString() + " Text is: " + txt.Text);
   }
   private void txt_TextChanged(object sender, System.EventArgs e)
   {
       Log("Changed: " + " Text is: " + txt.Text);
   }
   private void pic_MouseEnter(object sender, System.EventArgs e)
   {
       Log("Mouse Enter");
   }
   private void pic_MouseHover(object sender, System.EventArgs e)
   {
       Log("Mouse Hover");
   }
   private void pic_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
   {
       Log("Mouse Down: X=" + e.X.ToString() + " Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
   }
   private void pic_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
   {
       Log("Mouse Up: X=" + e.X.ToString() + " Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
   }
   private void pic_Click(object sender, System.EventArgs e)
   {
       Log("Click");
   }
   private void pic_DoubleClick(object sender, System.EventArgs e)
   {
       Log("Double Click");
   }
   private void pic_MouseLeave(object sender, System.EventArgs e)
   {
       Log("Mouse Leave");
   }
   private void InitializeComponent()
   {
       this.GroupBox1 = new System.Windows.Forms.GroupBox();
       this.Label4 = new System.Windows.Forms.Label();
       this.Label1 = new System.Windows.Forms.Label();
       this.pic = new System.Windows.Forms.PictureBox();
       this.txt = new System.Windows.Forms.TextBox();
       this.cmd = new System.Windows.Forms.Button();
       this.Label2 = new System.Windows.Forms.Label();
       this.Label3 = new System.Windows.Forms.Label();
       this.eventLogList = new System.Windows.Forms.ListBox();
       this.GroupBox1.SuspendLayout();
       ((System.ruponentModel.ISupportInitialize)(this.pic)).BeginInit();
       this.SuspendLayout();
       // 
       // GroupBox1
       // 
       this.GroupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.GroupBox1.Controls.Add(this.Label4);
       this.GroupBox1.Controls.Add(this.Label1);
       this.GroupBox1.Controls.Add(this.pic);
       this.GroupBox1.Controls.Add(this.txt);
       this.GroupBox1.Controls.Add(this.cmd);
       this.GroupBox1.Controls.Add(this.Label2);
       this.GroupBox1.FlatStyle = System.Windows.Forms.FlatStyle.System;
       this.GroupBox1.Location = new System.Drawing.Point(7, 0);
       this.GroupBox1.Name = "GroupBox1";
       this.GroupBox1.Size = new System.Drawing.Size(384, 148);
       this.GroupBox1.TabIndex = 12;
       this.GroupBox1.TabStop = false;
       // 
       // Label4
       // 
       this.Label4.Location = new System.Drawing.Point(92, 108);
       this.Label4.Name = "Label4";
       this.Label4.Size = new System.Drawing.Size(56, 16);
       this.Label4.TabIndex = 5;
       this.Label4.Text = "And here:";
       // 
       // Label1
       // 
       this.Label1.Location = new System.Drawing.Point(6, 24);
       this.Label1.Name = "Label1";
       this.Label1.Size = new System.Drawing.Size(144, 16);
       this.Label1.TabIndex = 2;
       this.Label1.Text = "Test keyboard events here:";
       // 
       // pic
       // 
       this.pic.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
       this.pic.Location = new System.Drawing.Point(156, 48);
       this.pic.Name = "pic";
       this.pic.Size = new System.Drawing.Size(192, 48);
       this.pic.TabIndex = 3;
       this.pic.TabStop = false;
       this.pic.DoubleClick += new System.EventHandler(this.pic_DoubleClick);
       this.pic.Click += new System.EventHandler(this.pic_Click);
       this.pic.MouseHover += new System.EventHandler(this.pic_MouseHover);
       this.pic.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
       this.pic.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
       this.pic.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
       // 
       // txt
       // 
       this.txt.Location = new System.Drawing.Point(156, 20);
       this.txt.Name = "txt";
       this.txt.Size = new System.Drawing.Size(192, 21);
       this.txt.TabIndex = 1;
       this.txt.KeyUp += new System.Windows.Forms.KeyEventHandler(this.txt_KeyUp);
       this.txt.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txt_KeyPress);
       this.txt.TextChanged += new System.EventHandler(this.txt_TextChanged);
       this.txt.KeyDown += new System.Windows.Forms.KeyEventHandler(this.txt_KeyDown);
       // 
       // cmd
       // 
       this.cmd.FlatStyle = System.Windows.Forms.FlatStyle.System;
       this.cmd.Location = new System.Drawing.Point(156, 100);
       this.cmd.Name = "cmd";
       this.cmd.Size = new System.Drawing.Size(88, 28);
       this.cmd.TabIndex = 4;
       this.cmd.Text = "Button1";
       this.cmd.MouseLeave += new System.EventHandler(this.pic_MouseLeave);
       this.cmd.Click += new System.EventHandler(this.pic_Click);
       this.cmd.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
       this.cmd.MouseHover += new System.EventHandler(this.pic_MouseHover);
       this.cmd.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
       this.cmd.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
       // 
       // Label2
       // 
       this.Label2.Location = new System.Drawing.Point(20, 52);
       this.Label2.Name = "Label2";
       this.Label2.Size = new System.Drawing.Size(128, 16);
       this.Label2.TabIndex = 2;
       this.Label2.Text = "Test mouse events here:";
       // 
       // Label3
       // 
       this.Label3.Location = new System.Drawing.Point(23, 100);
       this.Label3.Name = "Label3";
       this.Label3.Size = new System.Drawing.Size(64, 24);
       this.Label3.TabIndex = 11;
       this.Label3.Text = "Label3";
       // 
       // eventLogList
       // 
       this.eventLogList.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                   | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.eventLogList.FormattingEnabled = true;
       this.eventLogList.IntegralHeight = false;
       this.eventLogList.Location = new System.Drawing.Point(7, 156);
       this.eventLogList.Name = "eventLogList";
       this.eventLogList.Size = new System.Drawing.Size(384, 212);
       this.eventLogList.TabIndex = 10;
       // 
       // Form1
       // 
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(399, 374);
       this.Controls.Add(this.GroupBox1);
       this.Controls.Add(this.Label3);
       this.Controls.Add(this.eventLogList);
       this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
       this.Name = "Form1";
       this.Text = "Event Tracker";
       this.GroupBox1.ResumeLayout(false);
       this.GroupBox1.PerformLayout();
       ((System.ruponentModel.ISupportInitialize)(this.pic)).EndInit();
       this.ResumeLayout(false);
   }
   [STAThread]
   static void Main()
   {
       Application.EnableVisualStyles();
       Application.Run(new Form1());
   }

}


 </source>


PictureBox.TabStop

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Windows.Forms.VisualStyles; using System.Drawing.Drawing2D; public class Form1 : Form {

       private System.Windows.Forms.Panel panel1;
       private System.Windows.Forms.Button cmdCapture;
       private System.Windows.Forms.PictureBox pictureBox1;
     public Form1() {
           InitializeComponent();
           
     }
       private void cmdCapture_Click(object sender, EventArgs e)
       {
           if (pictureBox1.Image != null) pictureBox1.Image.Dispose();
           Bitmap bmp = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
           Graphics g = Graphics.FromImage(bmp);
           g.CopyFromScreen(0, 0, 0, 0, bmp.Size);
           g.Dispose();
           pictureBox1.Image = bmp;
           pictureBox1.Size = bmp.Size;
       }
       private void InitializeComponent()
       {
           this.panel1 = new System.Windows.Forms.Panel();
           this.cmdCapture = new System.Windows.Forms.Button();
           this.pictureBox1 = new System.Windows.Forms.PictureBox();
           this.panel1.SuspendLayout();
           ((System.ruponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
           this.SuspendLayout();
           this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                       | System.Windows.Forms.AnchorStyles.Left)
                       | System.Windows.Forms.AnchorStyles.Right)));
           this.panel1.AutoScroll = true;
           this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
           this.panel1.Controls.Add(this.pictureBox1);
           this.panel1.Location = new System.Drawing.Point(8, 8);
           this.panel1.Size = new System.Drawing.Size(270, 233);
           this.cmdCapture.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
           this.cmdCapture.Location = new System.Drawing.Point(169, 249);
           this.cmdCapture.Size = new System.Drawing.Size(110, 30);
           this.cmdCapture.Text = "Capture Screen";
           this.cmdCapture.UseVisualStyleBackColor = true;
           this.cmdCapture.Click += new System.EventHandler(this.cmdCapture_Click);
           this.pictureBox1.Location = new System.Drawing.Point(0, 0);
           this.pictureBox1.Size = new System.Drawing.Size(100, 50);
           this.pictureBox1.TabStop = false;
           this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
           this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
           this.ClientSize = new System.Drawing.Size(290, 288);
           this.Controls.Add(this.cmdCapture);
           this.Controls.Add(this.panel1);
           this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
           this.Text = "Screen Capture";
           this.panel1.ResumeLayout(false);
           ((System.ruponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
           this.ResumeLayout(false);
       }
     [STAThread]
     static void Main()
     {
           Application.EnableVisualStyles();
           Application.SetCompatibleTextRenderingDefault(false);
           Application.Run(new Form1());
     }

}

 </source>


PictureBox.Visible

<source lang="csharp"> using System; using System.Drawing; using System.Text; using System.Windows.Forms; public class ListText : Form {

 private Button choose = new Button();
 private ListBox animalList = new ListBox( );
 private ListBox things = new ListBox( );
 private TextBox text = new TextBox( );
 private PictureBox picture = new PictureBox();
 private PictureBox photo = new PictureBox();
 private CheckBox show = new CheckBox();
 private CheckBox author = new CheckBox();

 private Bitmap moon = new Bitmap("winter.jpg");

 public ListText( ) {
   Text = "List Text";
   choose.Text = "Choose";
   show.Text = "Show a bitmap";
   author.Text = "Show another bitmap";

   Size = new Size(400, 300);
   choose.Size = new Size(100,20);
   text.Size = new Size(150,50);
   photo.Size = new Size(100,100);

   choose.Location = new Point(20,30);
   animalList.Location = new Point(30 + choose.Width, 30);
   things.Location = new Point(40 + choose.Width + animalList.Width, 30);
   text.Location = new Point(20, 150);
   photo.Location = new Point(40 + text.Width, 150);
   picture.Location = new Point(60 + text.Width + photo.Width, 150);
   show.Location = new Point(20,70);
   author.Location = new Point(20,110);

   animalList.SelectionMode = SelectionMode.MultiSimple; 
   things.SelectionMode = SelectionMode.One;
   text.Multiline = true;                             
   picture.Image = (Image)moon;                       
   picture.Visible = false;     
   photo.Image = Image.FromFile("winter.jpg");
   photo.Visible = false;
   BackColor = Color.White;
   choose.BackColor = Color.Pink;

   animalList.Items.Add("A");
   animalList.Items.Add("B");
   animalList.Items.Add("C");
   animalList.Items.Add("D");
   animalList.Items.Add("E");
   things.Items.Add("1");
   things.Items.Add("2");
   things.Items.Add("3");
   things.Items.Add("4");

   Controls.Add(animalList);
   Controls.Add(things);
   Controls.Add(choose);
   Controls.Add(text);
   Controls.Add(picture);
   Controls.Add(show);
   Controls.Add(author);
   Controls.Add(photo);

   choose.Click += new EventHandler(Choose_Click);
   things.SelectedIndexChanged += new EventHandler(Things_Changed);
   show.CheckedChanged += new EventHandler(Picture_Changed);
   author.CheckedChanged += new EventHandler(Photo_Changed);
 }

 protected void Choose_Click(object sender, EventArgs e) {
   for(int i = 0; i < animalList.SelectedItems.Count; i++){
     Console.WriteLine(animalList.SelectedItems[i].ToString());
   }
 }

 protected void Things_Changed(object sender, EventArgs e) {
   text.Text = "You selected " + things.SelectedItem;
 }

 protected void Picture_Changed(Object sender, EventArgs e) {
   if (show.Checked)
     picture.Visible = true;
   else
     picture.Visible = false;
   Invalidate();
 }

 protected void Photo_Changed(Object sender, EventArgs e) {
   if (author.Checked)
     photo.Visible = true;
   else
     photo.Visible = false;
   Invalidate();
 }
 static void Main() {
    Application.Run(new ListText());
 }

}


 </source>