// 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();