Button click action to move a ball

   


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());
  }         
}