截屏Code

        public void CaptureScreen()
        {
            Image myImage;
            Graphics g;
            myImage = new Bitmap(Screen.PrimaryScreen.Bounds.Size.Width, Screen.PrimaryScreen.Bounds.Size.Height);
            g = Graphics.FromImage(myImage);
            //截取图片
            g.CopyFromScreen(0, 0, 0, 0, Screen.PrimaryScreen.Bounds.Size);
            g.Save();
            //图像格式
           ImageFormat pictureFormat = ImageFormat.Jpeg;
            //文件名
           string filename =  @"C:\" +　DateTime.Now.ToString("yyyy-MM-dd_HH_mm_ss") + "." + pictureFormat.ToString();
           myImage.Save(filename, pictureFormat);
        }