Graphics graphic = this.panelView.CreateGraphics();

            Size s = panelView.Size;

            memImage = new Bitmap(s.Width, s.Height, graphic);

            Graphics memGraphic = Graphics.FromImage(memImage);

            IntPtr dc1 = graphic.GetHdc();

            IntPtr dc2 = memGraphic.GetHdc();



            BitBlt(dc2, 0, 0, panelView.ClientRectangle.Width, panelView.ClientRectangle.Height,

                  dc1, 0, 0, 13369376);



            Image print_image = (Image)memImage.Clone();

            graphic.ReleaseHdc(dc1);

            memGraphic.ReleaseHdc(dc2);

            graphic.Dispose();

            memGraphic.Dispose();



            PrintPreviewDialog dlg = new PrintPreviewDialog();

            dlg.Width = 800;

            dlg.Height = 600;

            dlg.Document = printDocument1;



            if (dlg.ShowDialog() == DialogResult.OK)

                printDocument1.Print();