Csharp/C Sharp/2D Graphics/Animation

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Animate Demo

<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 Animate_c {

   public class AnimateDemo : System.Windows.Forms.Form
   {
   private System.Windows.Forms.Button cmdGo;
       /// <summary>
       /// Required designer variable.
       /// </summary>
       /// 
   Bitmap RotatingBlocks;
   Point DrawHere;
   Rectangle InvalidRect;
   bool InProcess = false;
   private System.Windows.Forms.Button cmdStop;
       private System.ruponentModel.Container components = null;
       public AnimateDemo()
       {
         InitializeComponent();
   
         RotatingBlocks = new Bitmap("blocks.gif");
         DrawHere = new Point(10, 10);
         InvalidRect = new Rectangle(DrawHere, RotatingBlocks.Size);
   
         this.SetStyle(ControlStyles.AllPaintingInWmPaint,true);
         this.SetStyle(ControlStyles.DoubleBuffer,true);
         cmdStop.Enabled = false;
      }
       protected override void Dispose( bool disposing )
       {
           if( disposing )
           {
               if (components != null) 
               {
                   components.Dispose();
               }
           }
           RotatingBlocks.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.cmdGo = new System.Windows.Forms.Button();
     this.cmdStop = new System.Windows.Forms.Button();
     this.SuspendLayout();
     // 
     // cmdGo
     // 
     this.cmdGo.Location = new System.Drawing.Point(160, 120);
     this.cmdGo.Name = "cmdGo";
     this.cmdGo.Size = new System.Drawing.Size(64, 32);
     this.cmdGo.TabIndex = 0;
     this.cmdGo.Text = "Animate";
     this.cmdGo.Click += new System.EventHandler(this.cmdGo_Click);
     // 
     // cmdStop
     // 
     this.cmdStop.Location = new System.Drawing.Point(240, 120);
     this.cmdStop.Name = "cmdStop";
     this.cmdStop.Size = new System.Drawing.Size(56, 32);
     this.cmdStop.TabIndex = 1;
     this.cmdStop.Text = "Stop";
     this.cmdStop.Click += new System.EventHandler(this.cmdStop_Click);
     // 
     // AnimateDemo
     // 
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(312, 157);
     this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                 this.cmdStop,
                                                                 this.cmdGo});
     this.MaximizeBox = false;
     this.MinimizeBox = false;
     this.Name = "AnimateDemo";
     this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
     this.Text = "AnimateDemo";
     this.Load += new System.EventHandler(this.AnimateDemo_Load);
     this.ResumeLayout(false);
   }
       #endregion
       /// <summary>
       /// The main entry point for the application.
       /// </summary>
       [STAThread]
       static void Main() 
       {
           Application.Run(new AnimateDemo());
       }
   private void AnimateDemo_Load(object sender, System.EventArgs e)
   {
   }
   private void OnFrameChanged(object o, EventArgs e) 
   {
     //Force a call to the Paint event handler.
     this.Invalidate(InvalidRect);
   }
   protected override void OnPaint(PaintEventArgs e) 
   {
     if ( !InProcess )
       return;
     
     //Get the next block ready to display.
     ImageAnimator.UpdateFrames(RotatingBlocks);
     //Draw the next frame in the RotatingBlocks animation.
     e.Graphics.DrawImage(RotatingBlocks, DrawHere);
   }
   private void cmdGo_Click(object sender, System.EventArgs e)
   {
     if (!InProcess) 
     {
       if ( ImageAnimator.CanAnimate(RotatingBlocks) )
       {
         //Begin the animation only once.
         ImageAnimator.Animate(RotatingBlocks, 
                               new EventHandler(this.OnFrameChanged));
         InProcess = true;
         cmdGo.Enabled = false;
         cmdStop.Enabled = true;
       }
     }
   }
   private void cmdStop_Click(object sender, System.EventArgs e)
   {
     ImageAnimator.StopAnimate(RotatingBlocks, 
                               new EventHandler(this.OnFrameChanged));
     InProcess = false;
     cmdGo.Enabled = true;
     cmdStop.Enabled = false;
   }
 }

}


      </source>

<A href="http://www.nfex.ru/Code/CSharpDownload/Animate-c.zip">Animate-c.zip( 6 k)</a>


Animate 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.Windows.Forms; namespace Animate_c {

 public class animateImage : Form 
 {
   //Create a Bitmpap Object.
   Bitmap animatedImage = new Bitmap("1.gif");
   bool currentlyAnimating = false;
   //This method begins the animation.
   public void AnimateImage() 
   {
     if (!currentlyAnimating) 
     {
       //Begin the animation only once.
       ImageAnimator.Animate(animatedImage, new EventHandler(this.OnFrameChanged));
       currentlyAnimating = true;
     }
   }
   private void OnFrameChanged(object o, EventArgs e) 
   {
     //Force a call to the Paint event handler.
     this.Invalidate();
   }
   protected override void OnPaint(PaintEventArgs e) 
   {
     //Begin the animation.
     AnimateImage();
     //Get the next frame ready for rendering.
     ImageAnimator.UpdateFrames();
     //Draw the next frame in the animation.
     e.Graphics.DrawImage(this.animatedImage, new Point(0, 0));
   }
   public static void Main() 
   {
     Application.Run(new animateImage());
   }
 }

}


      </source>


Animate Image with ImageAnimator

<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 Bitmap bmp;
 
 public Form1()
 {
 }
 private void Form1_Load(object sender, EventArgs e)
 {
   bmp = new Bitmap("arrow.gif");
   ImageAnimator.Animate(bmp, new EventHandler(this.OnFrameChanged));
 }
 private void OnFrameChanged(object o, EventArgs e)
 {
   this.Invalidate();
 }
 private void Form1_Paint(object sender, PaintEventArgs e)
 {
   ImageAnimator.UpdateFrames();
   e.Graphics.DrawImage(this.bmp, new Point(0, 0));
 }

}


      </source>


Animates a circle

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

 private int x = 10, y = 10;
 private int width = 200, height = 200;
 private Button suspend = new Button();
 private Button resume = new Button();
 private Button abort = new Button();
 private Thread t;
 public AnimateFace() {
   BackColor = Color.White;
   abort.Text = "Abort";
   suspend.Text = "Suspend";
   resume.Text = "Resume";

   Controls.Add(suspend);
   Controls.Add(resume);
   Controls.Add(abort);
   int w = 20;
   suspend.Location = new Point(w, 240);
   resume.Location = new Point(w += 10 + suspend.Width, 240);     
   abort.Location = new Point(w += 10 + resume.Width, 240);
   abort.Click += new EventHandler(Abort_Click);
   suspend.Click += new EventHandler(Suspend_Click);
   resume.Click += new EventHandler(Resume_Click);
   t = new Thread(new ThreadStart(Run));
   t.Start();
 }
 protected void Abort_Click(object sender, EventArgs e) {
   t.Abort();
 }
 protected void Suspend_Click(object sender, EventArgs e) {
   t.Suspend();
 }
 protected void Resume_Click(object sender, EventArgs e) {
   t.Resume();
 }
 protected override void OnPaint( PaintEventArgs e )   {
   Graphics g = e.Graphics;
   Pen green = new Pen(Color.Green, 3);  
   Brush red = new SolidBrush(Color.Red);
   g.DrawEllipse(green, x, y, width, height);
   base.OnPaint(e);
 }
 public void Run() {
   int dx=9, dy=9;
   while (true) {
     for (int i = 0; i < 30; i++) { 
       x += dx; 
       y += dy; 
       width -= dx; 
       height -= dy;
       Invalidate();
       Thread.Sleep(30);
     }
     dx = -dx; dy = -dy; 
   }
 }
 public static void Main( ) {
   Application.Run(new AnimateFace());
 }        

}

      </source>


Animates an image

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

 private int width = 10;
 private int height = 10;
 Image pic = Image.FromFile("winter.jpg");
 private Button abort = new Button();
 Thread t;
 public AnimateImage() {
   abort.Text = "Abort";
   abort.Location = new Point(50, 230);
   abort.Click += new EventHandler(Abort_Click);
   Controls.Add(abort);
   SetStyle(ControlStyles.DoubleBuffer
          | ControlStyles.AllPaintingInWmPaint
          | ControlStyles.UserPaint, true);
          
   t = new Thread(new ThreadStart(Run));
   t.Start();
 }
 protected void Abort_Click(object sender, EventArgs e) {
   t.Abort();
 }
 
 protected override void OnPaint( PaintEventArgs e )   {
    Graphics g = e.Graphics;
    g.DrawRectangle(Pens.Black, 8, 8, width+3, height+3);
    g.DrawImage(pic, 10, 10, width, height);
    base.OnPaint(e);
 }
 
 public void Run() {
     int dx=5, dy=5;
     while (true) {
       for(int i = 0; i < 500; i++) {
         width += dx;
         height += dy;
         Invalidate();
         Thread.Sleep(30);
       }
       dx = -dx; dy = -dy; 
     }
 }
 public static void Main( ) {
     Application.Run(new AnimateImage());
 }         

}

      </source>


Animation and double buffer

<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 bool isShrinking = false;
   private int extraSize = 0;
   private System.Windows.Forms.Timer tmrRefresh;
   private System.Windows.Forms.CheckBox chkDoubleBuffer;
     public Form1() {
           InitializeComponent();
     tmrRefresh.Start();
     }
   private void tmrRefresh_Tick(object sender, System.EventArgs e)
   {
     if (isShrinking)
       extraSize--;
     else
       extraSize++;
     if (extraSize > 500)
       isShrinking = true;
     else if (extraSize < 1)
       isShrinking = false;
     this.Invalidate();
   }
   private void DoubleBuffering_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
   {
     this.DoubleBuffered = chkDoubleBuffer.Checked;
     Graphics g = e.Graphics;
     g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
     Pen drawingPen = new Pen(Color.Black, 10);
     g.FillRectangle(Brushes.White, new Rectangle(new Point(0, 0),
             this.ClientSize));
     g.DrawRectangle(drawingPen, 50, 50, 50 + extraSize, 50 + extraSize);
   }
   private void InitializeComponent()
   {
     this.tmrRefresh = new System.Windows.Forms.Timer(new System.ruponentModel.Container());
     this.chkDoubleBuffer = new System.Windows.Forms.CheckBox();
     this.SuspendLayout();
     // 
     // tmrRefresh
     // 
     this.tmrRefresh.Interval = 1;
     this.tmrRefresh.Tick += new System.EventHandler(this.tmrRefresh_Tick);
     // 
     // chkDoubleBuffer
     // 
     this.chkDoubleBuffer.BackColor = System.Drawing.Color.White;
     this.chkDoubleBuffer.Location = new System.Drawing.Point(12, 12);
     this.chkDoubleBuffer.Name = "chkDoubleBuffer";
     this.chkDoubleBuffer.Size = new System.Drawing.Size(336, 16);
     this.chkDoubleBuffer.TabIndex = 2;
     this.chkDoubleBuffer.Text = "Use Double Buffering";
     this.chkDoubleBuffer.UseVisualStyleBackColor = false;
     // 
     // DoubleBuffering
     // 
     this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
     this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
     this.ClientSize = new System.Drawing.Size(422, 373);
     this.Controls.Add(this.chkDoubleBuffer);
     this.Name = "DoubleBuffering";
     this.Text = "Form1";
     this.Paint += new System.Windows.Forms.PaintEventHandler(this.DoubleBuffering_Paint);
     this.ResumeLayout(false);
   }
 [STAThread]
 static void Main()
 {
   Application.EnableVisualStyles();
   Application.Run(new Form1());
 }

}


      </source>


Button click action to move a ball

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

 private int x = 50, y = 50;
 private Button move = new Button();
 public ButtonToMove() {
   move.Text = "Move";
   move.Location = new Point(5,5);
   Controls.Add(move);
   move.Click += new EventHandler(Move_Click);
 }    
 protected void Move_Click(object sender, EventArgs e) {
   x += 9;
   y += 9;
   Invalidate();
 }
 protected override void OnPaint( PaintEventArgs e )   {
   Graphics g = e.Graphics;
   Brush red = new SolidBrush(Color.Red);
   g.FillEllipse(red ,x ,y, 20 ,20);
   base.OnPaint(e);
 }
 public static void Main( ) {
   Application.Run(new ButtonToMove());
 }         

}

      </source>


No Flicker (Flicker Free) Animation

<source lang="csharp"> /* Code revised from chapter 9

GDI+ Custom Controls with Visual C# 2005 By Iulian Serban, Dragos Brezoi, Tiberiu Radu, Adam Ward Language English Paperback 272 pages [191mm x 235mm] Release date July 2006 ISBN 1904811604 Sample chapter http://www.packtpub.ru/files/1604_CustomControls_SampleChapter.pdf

For More info on GDI+ Custom Control with Microsoft Visual C# book visit website www.packtpub.ru

  • /

using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace FlickerFree {

   public partial class Form1 : Form
   {
       public Form1()
       {
           InitializeComponent();
       }
       private void tbInterval_Scroll(object sender, EventArgs e)
       {
           scrollingText.ScrollTimeInterval = tbInterval.Value;
       }
       private void tbAmount_Scroll(object sender, EventArgs e)
       {
           scrollingText.ScrollPixelAmount = tbAmount.Value;
       }
       
       /// <summary>
       /// Required designer variable.
       /// </summary>
       private System.ruponentModel.IContainer components = null;
       /// <summary>
       /// Clean up any resources being used.
       /// </summary>
       /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
       protected override void Dispose(bool disposing)
       {
           if (disposing && (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.scrollingText = new FlickerFree.ScrollingText();
           this.grpTrackerBars = new System.Windows.Forms.GroupBox();
           this.label1 = new System.Windows.Forms.Label();
           this.label2 = new System.Windows.Forms.Label();
           this.tbAmount = new System.Windows.Forms.TrackBar();
           this.tbInterval = new System.Windows.Forms.TrackBar();
           this.grpTrackerBars.SuspendLayout();
           ((System.ruponentModel.ISupportInitialize)(this.tbAmount)).BeginInit();
           ((System.ruponentModel.ISupportInitialize)(this.tbInterval)).BeginInit();
           this.SuspendLayout();
           // 
           // scrollingText
           // 
           this.scrollingText.BackColor = System.Drawing.Color.LightGray;
           this.scrollingText.Font = new System.Drawing.Font("Verdana", 26.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
           this.scrollingText.ForeColor = System.Drawing.Color.Navy;
           this.scrollingText.Location = new System.Drawing.Point(38, 29);
           this.scrollingText.Margin = new System.Windows.Forms.Padding(12, 10, 12, 10);
           this.scrollingText.Name = "scrollingText";
           this.scrollingText.ScrollPixelAmount = 10;
           this.scrollingText.ScrollTimeInterval = 100;
           this.scrollingText.Size = new System.Drawing.Size(300, 80);
           this.scrollingText.TabIndex = 0;
           this.scrollingText.Text = "Scrolling Text that Scrolls";
           // 
           // grpTrackerBars
           // 
           this.grpTrackerBars.Controls.Add(this.tbInterval);
           this.grpTrackerBars.Controls.Add(this.tbAmount);
           this.grpTrackerBars.Controls.Add(this.label2);
           this.grpTrackerBars.Controls.Add(this.label1);
           this.grpTrackerBars.Location = new System.Drawing.Point(38, 132);
           this.grpTrackerBars.Name = "grpTrackerBars";
           this.grpTrackerBars.Size = new System.Drawing.Size(322, 183);
           this.grpTrackerBars.TabIndex = 1;
           this.grpTrackerBars.TabStop = false;
           // 
           // label1
           // 
           this.label1.AutoSize = true;
           this.label1.Location = new System.Drawing.Point(7, 37);
           this.label1.Name = "label1";
           this.label1.Size = new System.Drawing.Size(72, 13);
           this.label1.TabIndex = 0;
           this.label1.Text = "Scroll Amount";
           // 
           // label2
           // 
           this.label2.AutoSize = true;
           this.label2.Location = new System.Drawing.Point(10, 134);
           this.label2.Name = "label2";
           this.label2.Size = new System.Drawing.Size(71, 13);
           this.label2.TabIndex = 1;
           this.label2.Text = "Scroll Interval";
           // 
           // tbAmount
           // 
           this.tbAmount.Location = new System.Drawing.Point(101, 19);
           this.tbAmount.Maximum = 20;
           this.tbAmount.Name = "tbAmount";
           this.tbAmount.Size = new System.Drawing.Size(200, 45);
           this.tbAmount.TabIndex = 2;
           this.tbAmount.Value = 1;
           this.tbAmount.Scroll += new System.EventHandler(this.tbAmount_Scroll);
           // 
           // tbInterval
           // 
           this.tbInterval.Location = new System.Drawing.Point(101, 123);
           this.tbInterval.Maximum = 500;
           this.tbInterval.Minimum = 10;
           this.tbInterval.Name = "tbInterval";
           this.tbInterval.Size = new System.Drawing.Size(200, 45);
           this.tbInterval.TabIndex = 3;
           this.tbInterval.TickFrequency = 10;
           this.tbInterval.Value = 100;
           this.tbInterval.Scroll += new System.EventHandler(this.tbInterval_Scroll);
           // 
           // Form1
           // 
           this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
           this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
           this.ClientSize = new System.Drawing.Size(456, 332);
           this.Controls.Add(this.grpTrackerBars);
           this.Controls.Add(this.scrollingText);
           this.Name = "Form1";
           this.Text = "Form1";
           this.grpTrackerBars.ResumeLayout(false);
           this.grpTrackerBars.PerformLayout();
           ((System.ruponentModel.ISupportInitialize)(this.tbAmount)).EndInit();
           ((System.ruponentModel.ISupportInitialize)(this.tbInterval)).EndInit();
           this.ResumeLayout(false);
       }
       #endregion
       private ScrollingText scrollingText;
       private System.Windows.Forms.GroupBox grpTrackerBars;
       private System.Windows.Forms.TrackBar tbInterval;
       private System.Windows.Forms.TrackBar tbAmount;
       private System.Windows.Forms.Label label2;
       private System.Windows.Forms.Label label1;
       
       [STAThread]
       static void Main()
       {
           Application.EnableVisualStyles();
           Application.SetCompatibleTextRenderingDefault(false);
           Application.Run(new Form1());
       }
   }
    public partial class ScrollingText : UserControl
   {
       private string text;
       private int scrollAmount = 10;
       private int position = 10;
       public ScrollingText()
       {
           InitializeComponent();
       }
       private void ScrollingText_Load(object sender, EventArgs e)
       {
           this.ResizeRedraw = true;
           if (!this.DesignMode)
           {
               scrollTimer.Enabled = true;
           }
       }
       private void scrollTimer_Tick(object sender, EventArgs e)
       {
           position += scrollAmount;
           this.Invalidate();
       }
       [Browsable(true),DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
       public override string Text
       {
           get
           {
               return text;
           }
           set
           {
               text = value;
               this.Invalidate();
           }
       }
       public int ScrollTimeInterval
       {
           get
           {
               return scrollTimer.Interval;
           }
           set
           {
               scrollTimer.Interval = value;
           }
       }
       public int ScrollPixelAmount
       {
           get
           {
               return scrollAmount;
           }
           set
           {
               scrollAmount = value;
           }
       }
       private void ScrollingText_Paint(object sender, PaintEventArgs e)
       {
       }
       protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
       {
           // to avoid a design-time error we need to add the following line
           if (e.ClipRectangle.Width == 0)
           {
               return;
           }
           base.OnPaint(e);
           if (position > this.Width)
           {
               // Reset the text to scroll back onto the control.
               position = -(int)e.Graphics.MeasureString(text, this.Font).Width;
           }
           // Create the drawing area in memory.
           // Double buffering is used to prevent flicker.
           Bitmap bufl = new Bitmap(e.ClipRectangle.Width, e.ClipRectangle.Height);
           Graphics g = Graphics.FromImage(bufl);
           g.FillRectangle(new SolidBrush(this.BackColor), e.ClipRectangle);
           g.DrawString(text, this.Font, new SolidBrush(this.ForeColor), position, 0);
           // Render the finished image on the form.  
           e.Graphics.DrawImageUnscaled(bufl, 0, 0);
           g.Dispose();
       }

/// <summary>

       /// Required designer variable.
       /// </summary>
       private System.ruponentModel.IContainer components = null;
       /// <summary> 
       /// Clean up any resources being used.
       /// </summary>
       /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
       protected override void Dispose(bool disposing)
       {
           if (disposing && (components != null))
           {
               components.Dispose();
           }
           base.Dispose(disposing);
       }
       #region Component 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.ruponents = new System.ruponentModel.Container();
           this.scrollTimer = new System.Windows.Forms.Timer(this.ruponents);
           this.SuspendLayout();
           // 
           // scrollTimer
           // 
           this.scrollTimer.Tick += new System.EventHandler(this.scrollTimer_Tick);
           // 
           // ScrollingText
           // 
           this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
           this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
           this.Name = "ScrollingText";
           this.Size = new System.Drawing.Size(400, 100);
           this.Load += new System.EventHandler(this.ScrollingText_Load);
           this.Paint += new System.Windows.Forms.PaintEventHandler(this.ScrollingText_Paint);
           this.ResumeLayout(false);
       }
       #endregion
       internal System.Windows.Forms.Timer scrollTimer;
   }

}

      </source>


Object collision

<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 int dx = 4;
   private System.Windows.Forms.PictureBox picTarget;
   private System.Windows.Forms.PictureBox picBall;
   private System.Windows.Forms.Timer timer1;
   public Form1() {
       InitializeComponent();
   }
   private void InitializeComponent() {
     this.picTarget = new System.Windows.Forms.PictureBox();
     this.picBall = new System.Windows.Forms.PictureBox();
     this.timer1 = new System.Windows.Forms.Timer(new System.ruponentModel.Container());
     this.SuspendLayout();
     this.picTarget.BackColor = Color.Red;
     this.picTarget.Location = new System.Drawing.Point(160, 240);
     this.picTarget.Name = "picTarget";
     this.picTarget.Size = new System.Drawing.Size(56, 56);
     this.picTarget.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
     this.picTarget.TabIndex = 0;
     this.picTarget.TabStop = false;
     this.picBall.Image = new Bitmap("winter.jpg");
     this.picBall.Location = new System.Drawing.Point(24, 136);
     this.picBall.Name = "picBall";
     this.picBall.Size = new System.Drawing.Size(32, 32);
     this.picBall.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
     this.picBall.TabIndex = 1;
     this.picBall.TabStop = false;
     this.timer1.Enabled = true;
     this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.BackColor = System.Drawing.Color.White;
     this.ClientSize = new System.Drawing.Size(392, 341);
     this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                 this.picBall,
                                                                 this.picTarget});
     this.Name = "Form1";
     this.Text = "Crasher";
     this.ResumeLayout(false);
   }
   [STAThread]
   static void Main() {
     Application.Run(new Form1());
   }
   private void timer1_Tick(object sender, System.EventArgs e) {
     int newX, newY;
     newX = picBall.Location.X + dx;
     newY = picBall.Location.Y + dx;
     
     if (newX > this.Width - picBall.Width){
       dx = - dx;
     } 
     
     if (newX < 0){
       dx = - dx;
     }
     
     if (picBall.Bounds.IntersectsWith(picTarget.Bounds)){
       this.BackColor = Color.Black;
     } else {
       this.BackColor = Color.White;
     }
     
     picBall.Location = new Point(newX, newY);
   }

}


      </source>


Timer based animation

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

   private System.ruponentModel.IContainer components;
 public Form1(){
   InitializeComponent();
 }
 #region Windows Form Designer generated code
 private void InitializeComponent(){
     this.ruponents = new System.ruponentModel.Container();
     this.timer1 = new System.Windows.Forms.Timer(this.ruponents);
     this.timer1.Enabled = true;
     this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
     this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);
     this.ClientSize = new System.Drawing.Size(292, 260);
     this.Name = "Form1";
     this.Text = "LinearGradientBrush Demo";
     this.Load += new System.EventHandler(this.Form1_Load);
     this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
   }
 #endregion
 static void Main(){
   Application.Run(new Form1());
 }
   private void Form1_Load(object sender, System.EventArgs e) {
     this.BackColor = Color.FromArgb(255, 0, 0, 255);  
   }
   private System.Windows.Forms.Timer timer1;
   private float angle = 0;
   private LinearGradientBrush GetBrush()
   {
     return new LinearGradientBrush(
       new Rectangle( 20, 20, 200, 100),
       Color.Orange,
       Color.Yellow,
       0.0F,
       true);
   }
   private void Rotate( Graphics graphics, LinearGradientBrush brush )
   {
     brush.RotateTransform(angle);
     brush.SetBlendTriangularShape(.5F);
     graphics.FillRectangle(brush, brush.Rectangle);
   }
   private void Rotate(Graphics graphics)
   {
     angle += 5 % 360;
     Rotate(graphics, GetBrush());
   }
   private void timer1_Tick(object sender, System.EventArgs e)
   {
     Rotate(CreateGraphics());
   }
   private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
   {
     Rotate(e.Graphics);
   }

}


      </source>


Uses a thread to Animate a ball

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

 private int x, y;
 private Button suspend = new Button();
 private Button resume = new Button();
 private Button abort = new Button();
 Thread t;
 public AnimateBall() {
   BackColor = Color.White;
   abort.Text = "Abort";
   suspend.Text = "Suspend";
   resume.Text = "Resume";
   int w = 20;
   suspend.Location = new Point(w, 200);
   resume.Location = new Point(w += 10 + suspend.Width, 200);     
   abort.Location = new Point(w += 10 + resume.Width, 200);
   abort.Click += new EventHandler(Abort_Click);
   suspend.Click += new EventHandler(Suspend_Click);
   resume.Click += new EventHandler(Resume_Click);
   Controls.Add(suspend);
   Controls.Add(resume);
   Controls.Add(abort);
   t = new Thread(new ThreadStart(Run));
   t.Start();
 }
 protected void Abort_Click(object sender, EventArgs e) {
   t.Abort();
 }
 protected void Suspend_Click(object sender, EventArgs e) {
   t.Suspend();
 }
 protected void Resume_Click(object sender, EventArgs e) {
   t.Resume();
 }
 protected override void OnPaint( PaintEventArgs e )   {
   Graphics g = e.Graphics;
   g.FillEllipse(Brushes.Red, 100 ,y, 4 ,4);
   base.OnPaint(e);
 }
 public void Run() {
   int dx=2, dy=2;
   y = 1; 
   while (true) {
     for(int i=0; i<140; i++) {
       y+=dy;
       Invalidate();
       Thread.Sleep(10);
     }
     dx = -dx; dy = -dy; 
   }
 }
 public static void Main( ) {
   Application.Run(new AnimateBall());
 }         

}

      </source>