C#实现屏幕指定区域截屏

            //string Opath = @"C:/Picture";
            //if (Opath.Substring(Opath.Length - 1, 1) != @"/")
               //Opath = Opath + @"/";
            //string photoname = DateTime.Now.Ticks.ToString();
            //string path1 = Opath + DateTime.Now.ToShortDateString();
            //if (!Directory.Exists(path1))
                //Directory.CreateDirectory(path1);

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 }