MainWindow.xaml.cs

using System;
using System.IO;
using System.IO.Packaging;
using System.Printing;
using System.Windows;
using System.Windows.Documents;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Xps;
using System.Windows.Xps.Packaging;

namespace Bug6842
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void PrintButton_Click(object sender, RoutedEventArgs e)
        {
            // Create a FlowDocument with an embedded image
            FlowDocument flowDocument = new FlowDocument
            {
                Blocks =
                {
                    new Paragraph
                    {
                        // ** this line causes the exception **
                        Background = new ImageBrush(new BitmapImage(new Uri("pack://application:,,,/sample.bmp"))),

                        Inlines =
                        {
                            new Run { Text = "test" },
                        },
                    },
                }
            };

            // create a temporary package
            var tempFilePath = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
            Package package = Package.Open(tempFilePath, FileMode.Create, FileAccess.ReadWrite);

            // create a temporary XPS document using that package
            string tempFilePath2 = Path.GetTempFileName();
            PackageStore.AddPackage(new Uri(tempFilePath2), package);
            var tempDocument = new XpsDocument(package, CompressionOption.Normal, tempFilePath2);

            var writer = XpsDocument.CreateXpsDocumentWriter(tempDocument);

            // Write the FlowDocument to the XPS document
            writer.Write(((IDocumentPaginatorSource) flowDocument).DocumentPaginator);

			// **new** close the temporary document
			PackageStore.RemovePackage(new Uri(tempFilePath2));
			tempDocument.Close();
			package.Close();

            // Get a default print ticket from the default printer
            LocalPrintServer localPrintServer = new LocalPrintServer();
            PrintQueue printQueue = LocalPrintServer.GetDefaultPrintQueue();
            PrintTicket printTicket = printQueue.DefaultPrintTicket;

            // Create an XpsDocumentWriter object for the print queue.
            XpsDocumentWriter printWriter = PrintQueue.CreateXpsDocumentWriter(printQueue);

			// **new** reopen the document as read-only
			tempDocument = new XpsDocument(tempFilePath, FileAccess.Read);

			// **new** this now succeeds
			printWriter.Write(tempDocument.GetFixedDocumentSequence(), printTicket);

            // avoiding the temporary document prints successfully
            // xpsDocumentWriter.Write(((IDocumentPaginatorSource) flowDocument).DocumentPaginator, printTicket);
        }
    }
}