PDFOne .NET
Powerful all-in-one PDF library for .NET

Compatibility

VS 2008 VS 2005 CLR 2.0

Home » Newsletter » March 2010

By V. Subhash

Printing a PDF document using PDFOne is very simple - create a PDFPrinter instance, load the PDF document, and call the "Print" method.

The PDF printer component exposes a System.Drawing.Printing.PrinterSettings property for full .NET printing support. This allows your .NET application to enumerate available printers, paper sizes, media trays and other settings and choose appropriate ones for PDF print jobs. Apart from this, the PDF printer component has numerous printing settings of its own, such as the ability to:

• automatically center the page to suit the output paper size
• automatically rotate to suit the paper orientation (landscape or portrait)
• offset hard margins of a printer
• customize page scaling
• specify page ranges and page order

The following code snippet illustrates how to a PDF document in C# using PDFOne .NET.

using System;
using System.Collections.Generic;
using System.Text;
using Gnostice.PDFOne;
using Gnostice.PDFOne.PDFPrinter;
using System.Drawing.Printing;

class PDF_Printer_Demo {

  static void Main(string[] args) {
    PDFPrinter PDFPrinter1
        = new PDFPrinter("your license key");

    PDFPrinter1.PasswordRequired
        += new PasswordRequiredEventHandler(PDFPrinter1_PasswordRequired);
    PDFPrinter1.PrintError
        += new PrintErrorDelegate(PDFPrinter1_PrintError);
    PDFPrinter1.RenderError
        += new RenderErrorHandler(PDFPrinter1_RenderError);
    PDFPrinter1.AfterPrintPage
        +=new PrintPageDelegate(PDFPrinter1_AfterPrintPage);

    try {
      Console.Write("Opening document ... ");
      // Load document for printing
      PDFPrinter1.LoadDocument("sample_doc.pdf");
      Console.WriteLine("Done");

      // Specify print settings
      PDFPrinter1.AutoCenter = true;
      PDFPrinter1.AutoRotate = true;
      PDFPrinter1.PageScaleType = PrintScaleType.None;
      PDFPrinter1.PrintOptions.PrintRange = PrintRange.Selection;
      PDFPrinter1.SelectedPages = "2,4";

      Console.Write("Selecting printer ... ");
      // Select first one among installed printers
      PDFPrinter1.PrintOptions.PrinterName
          = (String) PrinterSettings.InstalledPrinters[0];
      Console.WriteLine("Done");

      Console.WriteLine("Sending print output to selected printer [" +
                    PDFPrinter1.PrintOptions.PrinterName + "] ... ");
      // Start printing
      PDFPrinter1.Print();
      Console.Write("\r                                ");
      Console.WriteLine("\rDone.");

    } catch (Exception Exception1) {
      Console.WriteLine("\nError: " + Exception1.Message);
    } finally {
      try {
        Console.Write("Closing document ... ");
        // Close printed document
        PDFPrinter1.CloseDocument();
        Console.WriteLine("Done.");
      } catch (Exception Exception2) {
         Console.WriteLine("\nError: " + Exception2.Message);
      } finally {
        // Clean up
        PDFPrinter1.Dispose();

        Console.WriteLine("Press Enter to exit.");
        Console.In.ReadLine();
      }
    }
  }

  // Event handler for PDFPrinter.PrintError
  private static void PDFPrinter1_PrintError(
      object sender,
      int pageNumber,
      Exception e) {
    Console.WriteLine("\nError: While creating print output on page #" +
                      pageNumber.ToString() +
                      "\nOriginal Error Message: " +
                      e.Message);
  }


  // Event handler for PDFPrinter.RenderError
  private static void PDFPrinter1_RenderError(
      object sender,
      int pageNum,
      Exception renderError,
      ref bool continueRendering)  {
    Console.WriteLine("\n\nError: While rendering page #" +
                      pageNum.ToString() + " on printer." +
                      "\nOriginal Error Message: " +
                      renderError.Message);
  }


  // Event handler for PDFPrinter.AfterPrintPage
  private static void PDFPrinter1_AfterPrintPage(
      object sender,
      int pageNumber,
      PrintPageEventArgs e) {
    // Clear the current line
    Console.Write("\r                                ");
    // Write number of last page that was printed
    Console.Write("\rPrinting page #" + pageNumber.ToString());
  }


  // Event handler for PDFPrinter.PasswordRequired
  private static void PDFPrinter1_PasswordRequired(
      object sender,
      ref string password,
      ref bool continueLoading) {
    // Prompt for password
    Console.WriteLine("\n\nEnter a password to open this document: ");
    // Obtain password entered by user
    String sPassword = Console.In.ReadLine();

    // Open document with obtained password
    password = sPassword;
    continueLoading = true;
  }

}