请问如何从一张图像中截取一个矩形图像并显示在picturebox里?

[zhangzhentao]

rt

[singlepine]

<TD><IMG height="183" alt="" src="Images/index_login_03.jpg" width="235" usemap="#FPMap0"></TD>

[Samen168]

B/S C/S

[zhangzhentao]

谢谢.可是我需要用winform实现.
也就是说,在picturebox里显示出已有图像的指定矩形部分

[TechEye]

下面我把pictureBox1.Image一部分画到pictureBox2中

Graphics g = pictureBox2.CreateGraphics();
//要复制的源区域
Rectangle rect = new Rectangle(10, 10, 30, 50);
g.DrawImage(pictureBox1.Image, 0, 0, rect, GraphicsUnit.Pixel);