1 //截取全屏图象
 2         private void btnFullScreen_Click(object sender, EventArgs e)
 3         {
 4             //创建图象，保存将来截取的图象
 5             Bitmap image = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
 6             Graphics imgGraphics = Graphics.FromImage(image);
 7             //设置截屏区域 柯乐义
 8             imgGraphics.CopyFromScreen(0, 0, 0, 0, new Size(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height));
 9             //保存
10             SaveImage(image);
11         }
12 
13 //保存图象文件
14         private void SaveImage(Image image)
15         {
16             if (saveFileDialog.ShowDialog(this) == DialogResult.OK)
17             {
18                 string fileName = saveFileDialog.FileName;
19                 string extension = Path.GetExtension(fileName);
20                 if (extension == ".jpg")
21                 {
22                     image.Save(fileName, ImageFormat.Jpeg);
23                 }
24                 else
25                 {
26                     image.Save(fileName, ImageFormat.Bmp);
27                 }
28             }
29         }