wpf Can i display images in DocumentViewer?

Question

I want to display xps Image in DocumentViewer, but without success.

Does DocumentViewer support displaying images?

If it is possible to display a picture in DocumentView, how can I do it?

Any reply will be helpful.

My code is as follows:

<StackPanel Orientation="Horizontal" >
    <FlowDocumentReader Height="150" Width="170">
        <FlowDocument  Name="flowDocument"   ColumnWidth="400" FontSize="14" FontFamily="Georgia">
            <Paragraph>
                <Grid>
                    <Image Source="C:\Users\Admin\Downloads\XpsTest-main\XpsTest-main\33.jpg" Width="200" Height="200" />
                    <TextBlock Text="Hello World!" HorizontalAlignment="Center" VerticalAlignment="Top"  Foreground="Red" />
                </Grid>
            </Paragraph>
        </FlowDocument>
    </FlowDocumentReader>
    <StackPanel>
        <Button Click="Button_Click" Content="save"/>
        <Button Click="Button_Click_1" Content="show"/>
    </StackPanel>
       
    <DocumentViewer Name="viewer" Width="600"/>
</StackPanel>

C#

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

namespace XpsTest
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

        }
        private void PrintVisual(Visual visual)
        {
            PrintDocumentImageableArea imageArea = null;
            XpsDocumentWriter xpdw = PrintQueue.CreateXpsDocumentWriter(ref imageArea);
            if (xpdw != null)
            {
                xpdw.Write(visual);
            }
        }
        public static void SaveAsXps(string path, FlowDocument document)
        {
            using (var package = Package.Open(path, FileMode.Create))
            {
                using (var xpsDocument = new XpsDocument(package, System.IO.Packaging.CompressionOption.Maximum))
                {
                    var xpsSerializationManager = new XpsSerializationManager(new XpsPackagingPolicy(xpsDocument), false);
                    var documentPaginator = ((IDocumentPaginatorSource)document).DocumentPaginator;
                    xpsSerializationManager.SaveAsXaml(documentPaginator);
                }
            }
        }
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            SaveAsXps(@"C:\Users\Admin\Desktop\temp.xps", flowDocument);
        }
        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            XpsDocument xpsDocument = new XpsDocument(@"C:\Users\Admin\Desktop\temp.xps", FileAccess.Read);
            FixedDocumentSequence fds = xpsDocument.GetFixedDocumentSequence();
            viewer.Document = fds;
        }
    }
}

Test the above code, the picture cannot be displayed normally in DocumentView.

Answer 1

I used the exact same code to test in .NetFramework 4.8 and in .NET6 respectively. It doesn't show pictures in .NetFramework 4.8 and shows pictures in .NET6(.NET5).

<Grid>
     <Grid.ColumnDefinitions>
         <ColumnDefinition Width="*"></ColumnDefinition>
         <ColumnDefinition Width="*"></ColumnDefinition>
     </Grid.ColumnDefinitions>

     <Grid.RowDefinitions>
         <RowDefinition Height="40"></RowDefinition>
         <RowDefinition Height="*"></RowDefinition>
     </Grid.RowDefinitions>
     <Button Grid.Row="0" Grid.Column="1"  HorizontalAlignment="Center" Width="80" Click="Button_Click_1">save as xps</Button>
     <FlowDocumentReader Height="150" Width="170" Grid.Column="1" Grid.Row="1">
         <FlowDocument  Name="flowDocument"   ColumnWidth="400" FontSize="14" FontFamily="Georgia">
             <Paragraph>
                 <Grid>
                     <Image Source="C:\Users\Admin\Downloads\WpfApp3\45.jpg" Width="200" Height="300" />
                     <TextBlock Text="Hello World!" HorizontalAlignment="Center" VerticalAlignment="Top"  Foreground="Red" />
                 </Grid>
             </Paragraph>
         </FlowDocument>
     </FlowDocumentReader>
     <Button Grid.Row="0" HorizontalAlignment="Center" Width="80" Click="Button_Click">open xps file</Button>
     <DocumentViewer Name="viewer"  Grid.Row="1"/>

Codebehind:

public static void SaveAsXps(string path, FlowDocument document)
{
    using (var package = Package.Open(path, FileMode.Create))
    {
        using (var xpsDocument = new XpsDocument(package, System.IO.Packaging.CompressionOption.Maximum))
        {
            var xpsSerializationManager = new XpsSerializationManager(new XpsPackagingPolicy(xpsDocument), false);
            var documentPaginator = ((IDocumentPaginatorSource)document).DocumentPaginator;
            xpsSerializationManager.SaveAsXaml(documentPaginator);
        }
    }
}

private void Button_Click(object sender, RoutedEventArgs e)
{
    { 
        string sFileName = @"C:\...\printPreview.xps";

        XpsDocument doc = new XpsDocument(sFileName, System.IO.FileAccess.Read);
        viewer.Document = doc.GetFixedDocumentSequence();
        return;
    }
}

private void Button_Click_1(object sender, RoutedEventArgs e)
{
    SaveAsXps(@"C:\...\printPreview.xps", flowDocument);
}

The result in .NetFramework 4.8 : The result in .NET6(.NET5) :

Answer 2

I think the problem here is likely to be because Image is a UI control. You could try putting it in a blockUIcontainer.
Try:

        <FlowDocument  Name="flowDocument"   ColumnWidth="400" FontSize="14" FontFamily="Georgia">
            <Paragraph>
               <BlockUIContainer>
                    <Image Source="C:\Users\Admin\Downloads\XpsTest-main\XpsTest-main\33.jpg" Width="200" Height="200" />
               </BlockUIContainer>
            </Paragraph>
        </FlowDocument>

I am doubtful about textblock as well. That should probably be a run or paragraph.

Answer 3

This is caused by an security update from Windows

KB5022083 Change in how WPF-based applications render XPS documents

XPS documents ... . Additionally, some inline images may not display correctly when XPS documents are loaded into WPF-based readers.

This regression was introduced in the December 13, 2022, cumulative security updates for .NET and .NET Framework.

Microsoft is actively investigating an additional update which restores compatibility while also resolving the underlying security issue.