WPF DocumentViewer

The WPF DocumentViewer control has some annoying features.

1. A find control ("Type text to find") that doesn't work.

2. A print function with limited configuration.

I work around these features by subclassing the DocumentViewer as follows:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows;
using System.Printing;
using System.Windows.Xps;

namespace FixedDocPrinting
{
   public class PrintDocumentViewer : DocumentViewer
   {
       PageOrientation _pageOrientation = PageOrientation.Portrait;
       public PageOrientation PageOrientation
       {
           get { return _pageOrientation; }
           set { _pageOrientation = value; }
       }

       Visibility _findControlVisibility = Visibility.Collapsed;
       public Visibility FindControlVisibility
       {
           get
           {
               return _findControlVisibility;
           }
           set
           {
               _findControlVisibility = value;
               UpdateFindControlVisibility();
           }
       }

       private void UpdateFindControlVisibility()
       {
           object toolbar = this.Template.FindName("PART_FindToolBarHost", this);
           ContentControl cc = toolbar as ContentControl;
           if (cc != null)
           {
               HeaderedItemsControl itemsControl = cc.Content as HeaderedItemsControl;
               if (itemsControl != null)
                   itemsControl.Visibility = FindControlVisibility;
           }
       }

       public PrintDocumentViewer()
       {
           Loaded += new RoutedEventHandler(PrintDocumentViewer_Loaded);
       }

       void PrintDocumentViewer_Loaded(object sender, RoutedEventArgs e)
       {
           UpdateFindControlVisibility();
       }

       protected override void OnPrintCommand()
       {
           PrintDialog printDialog = new PrintDialog();
           printDialog.PrintQueue = LocalPrintServer.GetDefaultPrintQueue();
           printDialog.PrintTicket = printDialog.PrintQueue.DefaultPrintTicket;

           printDialog.PrintTicket.PageOrientation = PageOrientation;

           if (printDialog.ShowDialog() == true)
           {
               // Code assumes this.Document will either by a FixedDocument or a FixedDocumentSequence
               FixedDocument fixedDocument = this.Document as FixedDocument;
               FixedDocumentSequence fixedDocumentSequence = this.Document as FixedDocumentSequence;

               if (fixedDocument != null)
                   fixedDocument.PrintTicket = printDialog.PrintTicket;

               if (fixedDocumentSequence!= null)
                   fixedDocumentSequence.PrintTicket = printDialog.PrintTicket;

               XpsDocumentWriter writer = PrintQueue.CreateXpsDocumentWriter(printDialog.PrintQueue);

               if (fixedDocument != null)
                   writer.WriteAsync(fixedDocument, printDialog.PrintTicket);

               if (fixedDocumentSequence != null)
                   writer.WriteAsync(fixedDocumentSequence, printDialog.PrintTicket);
           }
       }
   }
}

This hides the find control and gives me the ability to print in Landscape.

To use this code, you will need to add a reference to the ReachFramework dll which contains useful classes in the System.Printing and System.Windows.Xps name spaces.