MultipagePrintDocument.cs

/*------------------------------------------------------
** OnBeginPrint
** description: This method overrides the standard
**              OnBeginPrint method and sets the from
**              and to page values
**
** parameters: standard PrintEventArgs
**----------------------------------------------------*/
protected override void OnBeginPrint(PrintEventArgs e)
{
    base.OnBeginPrint(e);

    // if PrinterSettings have been specified, check the print ranges
    switch (PrinterSettings.PrintRange)
    {
        case PrintRange.AllPages:
            m_currentPage = 0;
            m_toPage = m_textControl.Pages - 1;
            break;
        case PrintRange.SomePages:
            m_currentPage = PrinterSettings.FromPage - 1;
            m_toPage = PrinterSettings.ToPage - 1;
            break;
        default:
            throw new InvalidOperationException("This print range is not valid.");
    }

    // switch the page size values based on the page orientation
    m_paperSize = (PrinterSettings.DefaultPageSettings.Landscape) ?
        new Size(
            PrinterSettings.DefaultPageSettings.PaperSize.Height,
            PrinterSettings.DefaultPageSettings.PaperSize.Width) :
        new Size(
            PrinterSettings.DefaultPageSettings.PaperSize.Width,
            PrinterSettings.DefaultPageSettings.PaperSize.Height);
}