具体实现代码如下：
using System.Drawing; //打开该页面 System.Diagnostics.Process.Start("IEXPLORE.EXE", "http://localhost:56/Spacxxe.html"); System.Threading.Thread.Sleep(3000); //截屏 //创建并设置画布大小 System.Drawing.Image templateImage = new System.Drawing.Bitmap(1040, 700); System.Drawing.Graphics templateG = System.Drawing.Graphics.FromImage(templateImage); //new Point(200, 100)位于源（屏幕）左上角的x,y坐标 //new Point(0, 0)图片位于画布左上角的x,y坐标 //new Size(1440, 900)所截屏幕的大小 templateG.CopyFromScreen(new Point(200, 100), new Point(0, 0), new Size(1000, 900), CopyPixelOperation.MergeCopy); //关闭ie System.Diagnostics.Process[] pro = System.Diagnostics.Process.GetProcessesByName("IEXPLORE"); foreach (System.Diagnostics.Process ps in pro) { ps.Kill(); } //保存 templateImage.Save(@"E:\TEST\" + imgname + ".jpg", System.Drawing.Imaging.ImageFormat.Jpeg);