using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form { protected override void OnPaint(PaintEventArgs e) { Bitmap bmp = new Bitmap(100, 100); Graphics gImage = Graphics.FromImage(bmp); gImage.FillRectangle(Brushes.Red, 0, 0, bmp.Width, bmp.Height); gImage.DrawRectangle(Pens.Black, 10, 10, bmp.Width - 20, bmp.Height - 20); Graphics gScreen = e.Graphics; gScreen.FillRectangle(Brushes.White, this.ClientRectangle); gScreen.DrawImage(bmp, new Rectangle(10, 10, bmp.Width, bmp.Height)); } public static void Main() { Application.Run(new Form1()); } }