Progress® Telerik® UI for WPF Feedback Portal
Recently Updated
New Items
Most Popular
Status Info
New Items
Request a Feature Report a Bug
Unplanned
Last Updated: 15 Jan 2026 13:21 by Markus
PdfViewer: PDF documents gets a lot of black/grey images
Created by: Markus
Comments: 0
Category: PDFViewer
Type: Bug Report
0
PdfViewer: PDF documents gets a lot of black/grey images

The PDF document with images shows black canvas:

NOTE:

Works OK in version 2023.2.713
Broken in version 2023.3.1005
Unplanned
Last Updated: 13 Jan 2026 10:08 by Stenly
PdfViewer: Introduce events similar to the PageRenderStarted and PageRenderCompleted ones that the Telerik UI for WinForms RadPdfViewer provides
Created by: Stenly
Comments: 0
Category: PDFViewer
Type: Feature Request
2
PdfViewer: Introduce events similar to the PageRenderStarted and PageRenderCompleted ones that the Telerik UI for WinForms RadPdfViewer provides

Introduce events similar to the PageRenderStarted and PageRenderCompleted ones that the Telerik UI for WinForms RadPdfViewer provides:

WinForms PdfViewer How-To Handle Rendering Events - Telerik UI for WinForms

Unplanned
Last Updated: 10 Nov 2025 11:41 by Martin Ivanov
PdfViewer: The edited value of AcroForm interactive fields is not updated when the field is still in edit mode and it goes out of the viewport
Created by: Martin Ivanov
Comments: 0
Category: PDFViewer
Type: Bug Report
1
PdfViewer: The edited value of AcroForm interactive fields is not updated when the field is still in edit mode and it goes out of the viewport
The edited value of an interactive form field (for example TextBox) is not committed when the form goes outside of the viewport while still in edit mode.
Unplanned
Last Updated: 24 Jun 2025 14:54 by Martin Ivanov
PdfView: Rendered image position and size scaling is wrong for some document
Created by: Martin Ivanov
Comments: 0
Category: PDFViewer
Type: Bug Report
0
PdfView: Rendered image position and size scaling is wrong for some document
The size of some images in specific documents is scaled and positioned wrongly.
Unplanned
Last Updated: 11 Jun 2025 07:23 by Stefan
PdfViewer: Expose an API that allows you Add/Remove Annotations/IPointerHandler
Created by: Stefan
Comments: 0
Category: PDFViewer
Type: Feature Request
1
PdfViewer: Expose an API that allows you Add/Remove Annotations/IPointerHandler
Expose API that allows you to add/remove Annotations/IPointerHandler implementations from the PointerHandlersController.
Unplanned
Last Updated: 03 Jun 2025 09:32 by Martin Ivanov
PdfViewer: Add support for rendering comments for the highlight annotations
Created by: Martin Ivanov
Comments: 0
Category: PDFViewer
Type: Feature Request
0
PdfViewer: Add support for rendering comments for the highlight annotations
Currently, RadPdfViewer doesn't allow you to render notes/comments added to the highlight annotations. Add the option to render this and possibly allow editing. 
Unplanned
Last Updated: 27 May 2025 06:14 by Geoff
PdfViewer: the path objects are not drawn with correct background
Created by: Geoff
Comments: 0
Category: PDFViewer
Type: Bug Report
0
PdfViewer: the path objects are not drawn with correct background
The path objects are not drawn with correct background.
Completed
Last Updated: 11 Nov 2025 08:11 by ADMIN
Release Telerik UI for WPF 2025.4.1111 (2025 Q4)
PdfViewer: (memory leak) The control instance stays in memory after it gets removed from the visual tree
Created by: Martin Ivanov
Comments: 0
Category: PDFViewer
Type: Bug Report
2
PdfViewer: (memory leak) The control instance stays in memory after it gets removed from the visual tree

A memory leak in RadPdfViewer when the control gets removed from the visual tree.

To work this around, use the reflection API to access the leaking VisualTarget objects and call their Dispose method manually.

var pdfViewer = hostBorder.Child as RadPdfViewer;

if (pdfViewer != null)
{
    var canvas = viewer.ChildrenOfType<Canvas>().FirstOrDefault(x => x.GetType().Name.Contains("ContentElementsCanvas"));                
    var visualTargetsDictionaryField = canvas.GetType().GetField("pageNumberToVisualTarget", BindingFlags.NonPublic | BindingFlags.Instance);
    var visualTargetsDictionary = (Dictionary<int, List<VisualTarget>>)visualTargetsDictionaryField.GetValue(canvas);
    foreach (KeyValuePair<int, List<VisualTarget>> target in visualTargetsDictionary)
    {
        for (int i = 0; i < target.Value.Count; i++)
        {
            VisualTarget item = target.Value[i];
            item.RootVisual = null;
            item.Dispose();
        }
    }  
}
hostBorder.Child = null;
hostBorder.Child = new RadPdfViewer() { Document = newDocument };

Unplanned
Last Updated: 10 Mar 2025 10:39 by Martin Ivanov
PdfViewer: Add support for handwritten (graphometric) signatures
Created by: Martin Ivanov
Comments: 0
Category: PDFViewer
Type: Feature Request
0
PdfViewer: Add support for handwritten (graphometric) signatures
Add support for handwritten (graphometric information) signatures in the PdfViewer. 
Unplanned
Last Updated: 28 Feb 2025 05:32 by SF
PdfViewer: PDF Signature(image) is displayed on the incorrect location when using annotations.
Created by: SF
Comments: 0
Category: PDFViewer
Type: Bug Report
3
PdfViewer: PDF Signature(image) is displayed on the incorrect location when using annotations.
PDF Signature(image) is displayed on the incorrect location when using annotations.
Completed
Last Updated: 21 May 2025 07:52 by ADMIN
Release 2025.2.521 (2025 Q2)
PdfViewer: Text is missing when importing a PDF document containing CFF font
Created by: Stenly
Comments: 0
Category: PDFViewer
Type: Bug Report
1
PdfViewer: Text is missing when importing a PDF document containing CFF font
When importing a PDF file, its text can be missing.
Completed
Last Updated: 21 May 2025 07:52 by ADMIN
Release 2025.2.521 (2025 Q2)
PdfViewer: Incorrect image rendering when a document is signed and has indexed color space
Created by: Stenly
Comments: 0
Category: PDFViewer
Type: Bug Report
0
PdfViewer: Incorrect image rendering when a document is signed and has indexed color space
The image rendering of the signed document with indexed color space is incorrect when importing it.
Completed
Last Updated: 11 Feb 2025 07:40 by ADMIN
Release 2025.1.211 (2025 Q1)
PdfViewer: ArgumentOutOfRangeException when PDFViewer is loaded async and one scrolls for some time
Created by: Marc
Comments: 0
Category: PDFViewer
Type: Bug Report
2
PdfViewer: ArgumentOutOfRangeException when PDFViewer is loaded async and one scrolls for some time
ArgumentOutOfRangeException when PDFViewer is loaded async and one scrolls for some time.
Duplicated
Last Updated: 08 Jan 2025 13:50 by ADMIN
RadPdfViewer does not render Pdf document in 2024.4.x release
Created by: Mike
Comments: 3
Category: PDFViewer
Type: Bug Report
0
RadPdfViewer does not render Pdf document in 2024.4.x release

Hi Telerik-Team,

the 2024.4.X release of UI for WPF seems to no longer render pdf files correctly. It looks like as if the PdfViewer just renders the document as a single huge page.

An application that uses those references:

<PackageReference Include="Telerik.Windows.Controls.for.Wpf.Xaml" Version="2024.3.924" />
<PackageReference Include="Telerik.Windows.Controls.FixedDocumentViewers.for.Wpf.Xaml" Version="2024.3.924" />
<PackageReference Include="Telerik.Windows.Documents.Core" Version="2024.3.806" />
<PackageReference Include="Telerik.Windows.Documents.Fixed" Version="2024.3.806" />
<PackageReference Include="Telerik.Windows.Zip" Version="2024.3.806" />

works as expected. Once you change those to:

<PackageReference Include="Telerik.Windows.Controls.for.Wpf.Xaml" Version="2024.4.1111" />
<PackageReference Include="Telerik.Windows.Controls.FixedDocumentViewers.for.Wpf.Xaml" Version="2024.4.1111" />
<PackageReference Include="Telerik.Windows.Documents.Core" Version="2024.4.106" />
<PackageReference Include="Telerik.Windows.Documents.Fixed" Version="2024.4.106" />
<PackageReference Include="Telerik.Windows.Zip" Version="2024.4.106" />

the renderer stops working.

I have attached a VS solution with a pdf file that reproduces this

Completed
Last Updated: 12 Feb 2025 15:20 by ADMIN
Release 2025.1.205 (2025 Q1)
PdfViewer: NullReferenceException when Type1 font with random bytes count ("lenIV") is set to 0
Created by: Manuel
Comments: 0
Category: PDFViewer
Type: Bug Report
2
PdfViewer: NullReferenceException when Type1 font with random bytes count ("lenIV") is set to 0
NullReferenceException when Type1 font with random bytes count ("lenIV") is set to 0.
Unplanned
Last Updated: 21 Nov 2024 08:02 by Dimitar
PdfViewer: Wrong color of lines due to Matrix Transformations applied to the Drawing
Created by: Dimitar
Comments: 0
Category: PDFViewer
Type: Bug Report
0
PdfViewer: Wrong color of lines due to Matrix Transformations applied to the Drawing
Wrong color of lines due to Matrix Transformations applied to the Drawing.
Completed
Last Updated: 13 Jan 2025 06:57 by ADMIN
Release 2024.4.1219 (Preview)
PdfViewer: Invalid rendering with German culture (Regression)
Created by: Thomas
Comments: 6
Category: PDFViewer
Type: Bug Report
6
PdfViewer: Invalid rendering with German culture (Regression)
PdfViewer: Invalid rendering with German culture (Regression). Some text is missing and the rendering is broken.
Unplanned
Last Updated: 18 Oct 2024 11:40 by Martin Ivanov
PdfViewer: Line geometries are not rendered properly in some scenarios
Created by: Martin Ivanov
Comments: 0
Category: PDFViewer
Type: Bug Report
1
PdfViewer: Line geometries are not rendered properly in some scenarios
Some lines could be missing in the PdfViewer when rendering line geometries.


The attached image shows the issue.

Unplanned
Last Updated: 16 Oct 2024 07:15 by Stenly
PdfViewer: The import performance is reduced when having XObject instances with many Shading elements
Created by: Stenly
Comments: 0
Category: PDFViewer
Type: Bug Report
1
PdfViewer: The import performance is reduced when having XObject instances with many Shading elements
The import performance is reduced and the memory consumption is increased when XObject instances have many Shading elements.
Unplanned
Last Updated: 24 Sep 2024 08:39 by Patrizio
PdfViewer: Glyphs with specific font added to the document are not rendered.
Created by: Patrizio
Comments: 0
Category: PDFViewer
Type: Bug Report
0
PdfViewer: Glyphs with specific font added to the document are not rendered.
Glyphs with specific font added to the document are not rendered. 
1 2 3 4 5 6
Create an account Log In
View
Type
Status
Category