1: public Form1()
2: {
3: InitializeComponent();
4: this.Show();
5: Graphics grp = this.CreateGraphics();
6: Pen p = new Pen(Color.Black, 2);
7: grp.DrawLine(p, new Point(0, 0), new Point(100, 100));
8: grp.DrawEllipse(p,20,20,100,80);
9: //draw ellipse according responding rectangle.
10: grp.DrawRectangle(p, 20, 20, 100, 80);
11:
12: }