Bitmap bitmap = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);            Graphics g = Graphics.FromImage(bitmap);            g.CopyFromScreen(new Point(0, 0), new Point(0, 0), Screen.PrimaryScreen.Bounds.Size);            bitmap.Save(Application.StartupPath + @"\截图.png");            bitmap.Dispose();            bitmap.Dispose();