Print Content of Panel in winform

private void btnPrint_Click(object sender, EventArgs e)

        {

         Pd.PrintPage += PrintPage;

         Pd.DefaultPageSettings.PaperSize = new PaperSize("Custom",
                                                           panel1.Width+20,
                                                           panel1.Height+15 );

         Pd.Print();

        }

[System.Runtime.InteropServices.DllImport("gdi32.dll")]

public static extern long BitBlt(IntPtr hdcDest, int nXDest,
                                 int nYDest, int nWidth,
                                 int nHeight, IntPtr hdcSrc,
                                 int nXSrc, int nYSrc,
                                 int dwRop);

        private void CaptureScreen(Panel pnl)

        {

            Graphics mygraphics = pnl.CreateGraphics();

            Size s = pnl.Size;

            memoryImage = new Bitmap(s.Width, s.Height, mygraphics);

            Graphics memoryGraphics = Graphics.FromImage(memoryImage);

            IntPtr dc1 = mygraphics.GetHdc();

            IntPtr dc2 = memoryGraphics.GetHdc();

            BitBlt(dc2, 0, 0, pnl.Width, pnl.Height, dc1, 0, 0, 13369376);

            mygraphics.ReleaseHdc(dc1);

            memoryGraphics.ReleaseHdc(dc2);

        }

private void PrintPage(System.Object sender,
                       System.Drawing.Printing.PrintPageEventArgs e)

        {

            CaptureScreen(panel1);

            e.Graphics.DrawImage(memoryImage, 5, 5);

        }