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copied!<p>So I got it working after reading <a href="http://rads.stackoverflow.com/amzn/click/1590599551" rel="noreferrer">Pro WPF in C# 2008</a> (Page 726).</p> <p>Basically the DocumentViewer class needs an XPS file to present a print preview of it. So I do the following:</p> <pre><code>PrintDialog dialog = new PrintDialog(); var paginator = new RowPaginator(rowsToPrint) { PageSize = new Size(dialog.PrintableAreaWidth, dialog.PrintableAreaHeight) }; string tempFileName = System.IO.Path.GetTempFileName(); //GetTempFileName creates a file, the XpsDocument throws an exception if the file already //exists, so delete it. Possible race condition if someone else calls GetTempFileName File.Delete(tempFileName); using (XpsDocument xpsDocument = new XpsDocument(tempFileName, FileAccess.ReadWrite)) { XpsDocumentWriter writer = XpsDocument.CreateXpsDocumentWriter(xpsDocument); writer.Write(paginator); PrintPreview previewWindow = new PrintPreview { Owner = this, Document = xpsDocument.GetFixedDocumentSequence() }; previewWindow.ShowDialog(); } </code></pre> <p>I'm creating the print dialog to get the default page size. There's probably a better way to do this. XpsDocument is in ReachFramework.dll (Namespace System.Windows.Xps.Packaging);</p> <p>Here's the PrintPreview Window.</p> <pre><code><Window x:Class="WPFPrintTest.PrintPreview" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Name="previewWindow" Title="PrintPreview" Height="800" Width="800"> <Grid> <DocumentViewer Name="viewer" Document="{Binding ElementName=previewWindow, Path=Document}" /> </Grid> </Window> </code></pre> <p>The code behind just has a Document property like so:</p> <pre><code>public IDocumentPaginatorSource Document { get { return viewer.Document; } set { viewer.Document = value; } } </code></pre>

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