如何在windows form C#中打印可滚动面板

private void PrintButton_Click(object sender, EventArgs e)
{
    PrintDocument printDocument = new PrintDocument();
    printDocument.PrintPage += new PrintPageEventHandler(PrintDocument_PrintPage);

    PrintDialog printDialog = new PrintDialog();
    printDialog.Document = printDocument;

    if (printDialog.ShowDialog() == DialogResult.OK)
    {
        printDocument.Print();
    }
}

private void PrintDocument_PrintPage(object sender, PrintPageEventArgs e)
{
    Bitmap bitmap = new Bitmap(scrollablePanel.Width, scrollablePanel.Height);
    scrollablePanel.DrawToBitmap(bitmap, new Rectangle(0, 0, scrollablePanel.Width, scrollablePanel.Height));

    e.Graphics.DrawImage(bitmap, new Point(0, 0));
}