Uses a thread to Animate a ball : Animation : Graphics C# Source Code

    


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());
  }         
}