พิมพ์ PDF ผ่าน C#

    // Create PdfViewer object
    PdfViewer viewer = new PdfViewer();

    // Open input PDF file
    viewer.BindPdf(System.IO.Path.Combine(_dataDir, "input.pdf"));

    // Set attributes for printing
    viewer.AutoResize = true;         // Print the file with adjusted size
    viewer.AutoRotate = true;         // Print the file with adjusted rotation
    viewer.PrintPageDialog = false;   // Do not produce the page number dialog when printing

    // Create objects for printer and page settings and PrintDocument
    System.Drawing.Printing.PrinterSettings ps = new System.Drawing.Printing.PrinterSettings();
    System.Drawing.Printing.PageSettings pgs = new System.Drawing.Printing.PageSettings();
    System.Drawing.Printing.PrintDocument prtdoc = new System.Drawing.Printing.PrintDocument();

    // Set printer name
    ps.PrinterName = prtdoc.PrinterSettings.PrinterName;

    // Set PageSize (if required)
    pgs.PaperSize = new System.Drawing.Printing.PaperSize("A4", 827, 1169);

    // Set PageMargins (if required)
    pgs.Margins = new System.Drawing.Printing.Margins(0, 0, 0, 0);

    // Print document using printer and page settings
    viewer.PrintDocumentWithSettings(pgs, ps);

    // Close the PDF file after priting
    viewer.Close();