int L = pictureBox1.Width;
            int H = pictureBox1.Height;
            int PX = pictureBox1.PointToScreen(Point.Empty).X;
            int PY = pictureBox1.PointToScreen(Point.Empty).Y;
            Size s = new Size(L, H);
            Bitmap MonImage = new Bitmap(L, H);
            Graphics G = Graphics.FromImage(MonImage);
            G.CopyFromScreen(new Point(PX, PY), new Point(0, 0), s);