C#

Random rnd = new Random();
Random rnd2 = new Random();
  for (int i = 0; i < 5; i++)
  {
    myIntegerCollection.Add(i);
    myEmployeeCollection.Add(new Employee(100 + i,rnd.Next(50),("name"+ rnd2.Next(50))));
  }

 private bool EXIT;
 private void Form1_KeyDown(object sender, KeyEventArgs e)
 {
     if (e.KeyCode == Keys.Escape)
     {
         EXIT = true;
     }
 }
 private void Function()
 {
     for (int x = 0; x < Max; x++)
     {
         if(EXIT)
         {
              break;
         }

         // work on image...
         OnPaintBackground(new PaintEventArgs(this.CreateGraphics(),new Rectangle(0,0,Width,eight)));
     }
}
protected override void OnPaintBackground(PaintEventArgs e)
{
            e.Graphics.DrawImage( image, 0, 0, Width, Height);
}