How to use printdocument and print preview to print a multiple page report

void printButton_Click(object sender, EventArgs e)
        {
            printDocument1.DefaultPageSettings.Margins = new System.Drawing.Printing.Margins(500, 500, 500, 500);
            printDialogPreview.Document = printDocument1;
            printDialogPreview.Document.DocumentName = MainForm._fileName;
            if (printDialogPreview.ShowDialog() == DialogResult.OK)
            {
                //printDocument1.PrinterSettings = printDialogPreview.PrinterSettings;
                printDocument1.Print();
            }
        }

        private void CapturePrintPanel(Control pnl)
        {
            Graphics myGraphics = pnl.CreateGraphics();
            memoryImage = new Bitmap(pnl.Width, pnl.Height);
            Rectangle rect = new Rectangle(0, 0, pnl.Width, pnl.Height);
            pnl.DrawToBitmap(memoryImage, new Rectangle(0, 0, pnl.Width, pnl.Height));
        }

        private void printDocument1_PrintPage(System.Object sender,
               System.Drawing.Printing.PrintPageEventArgs e)
        {
            for (int i = 0; i < Readings.Count; i++)
            {
                pP = new PrintPreview(Readings[i]);
                pP.Show();
                CapturePrintPanel(pP.Controls["printPanel"]);
                e.Graphics.DrawImage(memoryImage, 0, 0);
                pP.Close();
                pP.Dispose();
                if((i + 1) < Readings.Count)
                {
                    e.HasMorePages = i < Readings.Count;
                }
            }
            e.HasMorePages = false;
        }