Release History

Telerik UI for WPF 2025.4.1111 (2025 Q4)

November 12, 2025

What's New

NEW

• The WPF suite is fully compatible with .NET 10. All associated DLLs, installers, NuGet packages, and Visual Studio Extensions have been updated to officially support this version, ensuring smooth integration with the latest .NET platforms.
• The PdfViewer now includes AI Summarization support, enabling users to generate summaries of documents. This feature helps users quickly grasp key points and main ideas without having to read the entire text. The feature can be configured using one of the following services: AzureOpenAI, OpenAI, or Ollama.

Common

NEW

• The product is now fully compatible with Visual Studio 2026. This includes both the installers and extensions, ensuring a smooth integration and development experience in the latest IDE version.

Breaking Changes

• Updated System.Drawing.Common version to 8.0.0 and removed UseWindowsForms dependency for .NET 8/9. As a result, a FileNotFoundException no longer occurs during the resolution of the System.Windows.Forms assembly within the InitializeProperties method after publishing a .NET 9 application.

Dependencies

• Telerik Document Processing Library (DPL) version is updated to 2025.4.1104.
• SkiaSharp package version is updated to 3.119.1.

ChartView

FIXED

• TypeAccessException is thrown in .NET Framework projects when using an internal class for the data point models.

ChartView3D

FIXED

• Ray fragments are observed at the connection points of line segments within LineSeries3D when the lines create very sharp angles.

ComboBox

NEW

• Introduced an option to include additional content in the drop-down area, as well as the ability to position it.

DataForm

FIXED

• Selection of an editable RadComboBox hosted in the EditTemplate gets cleared on commit edit.

DataServiceDataSource

Breaking Changes

• Discontinued Telerik.Windows.Controls.DataServices50 and Telerik.Windows.Controls.DataServices60 assemblies. The Telerik.Windows.Controls.DataServices assembly now relies on Microsoft.OData.Client version 7.8.3.

Docking

FIXED

• A Path element in the HeaderTemplate property of a RadPane in Windows11 theme is rendered pixelated.
• A NullReferenceException is raised when quickly reordering the panes' tabs.
• The DockingNavigator does not display the RadTabControl inside a RadPane in the correct position.

EntityFrameworkDataSource

Breaking Changes

• Discontinued Telerik.Windows.Controls.EntityFramework assembly. For existing projects on .NET Framework 4.6.2, the Telerik.Windows.Controls.EntityFramework60 assembly remains available and has been updated to use Entity Framework 6.5.1 for improved stability and compatibility.

GridView

FIXED

• ArgumentOutOfRangeException is raised when the culture is set to th-TH (Thailand) and the ItemsSource is rebound to a non-initialized collection.

ListBox

FIXED

• A memory leak is present when removing items from the ItemsSource.

Menu

NEW

• Introduced an option to position the icon on the right of the RadMenuItem element.

MultiColumnComboBox

NEW

• Added an option to prevent the removal of the selected item when pressing the Delete or Back key (controlled by the ClearSelectionOnDeleteOrBackKey property).

PDF Viewer

NEW

• The PdfViewer now includes AI Summarization support, enabling users to generate summaries of documents. This feature helps users quickly grasp key points and main ideas without having to read the entire text. The feature can be configured using one of the following services: AzureOpenAI, OpenAI, or Ollama.

FIXED

• When loading a PDF file, it throws an 'Input string was not in a correct format' or 'Year, Month, and Day parameters describe an unrepresentable DateTime' exception.
• The PdfViewer`s instance stays in memory after it gets removed from the visual tree. With the current version setting the Document property to null before removing the control from the visual tree will allow it to be garbage collected.
• Handled the import of documents with invalid Creation or Modification dates.

CHANGED

• Resizer`s icon is not visible when using XAML binaries.
• The default value of RadPdfViewerNavigationPane`s PaneWidth property is changed in all themes.

PivotGrid

Breaking Changes

• Updated the Microsoft.AnalysisServices.AdomdClient dependency of the Telerik.Pivot.DataProviders.Adomd assembly version to 19.84.1.

PropertyGrid

FIXED

• Pressing the Enter key when a field editor is focused scrolls to the top if the vertical scrollbar is displayed and the properties are grouped.

RichTextBox

FIXED

• Custom annotations are not rendered correctly when they have no content and are right aligned.
• Document exported to DOCX with 2025 Q2 cannot be opened by 2025 Q1.
• Exception when pasting with keep source formatting when a style is not present in the document style repository.
• Exceptions occur on loading documents with element tags that don't have direct content but are using opening and closing tags instead of self-closing tags.
• Exporting documents (RadDocument) to docx format produces an invalid file.
• Importing an HTML that contains an image with an align attribute does not apply the alignment to the created image element in the document model.
• When selecting paragraphs, some of which belong to a list, the toggle list (bullet) command removes the list instead of adding the new items.
• When selecting numbering list with empty paragraphs inside, we cannot turn off numbering list.

ScheduleView

FIXED

• Changing the VisibleDays property of a view definition caused appointments to disappear when the IsGroupHeadersVirtualizationEnabled property is true.

Spreadsheet

FIXED

• Data validation dialog buttons do not respond to the Enter or Esc keys (Retry, Cancel).
• Deselecting the current active cell, which is part of a selection range (using the Ctrl key and mouse click), does not clear its selection.

SyntaxEditor

FIXED

• Auto scrolling stops working when the control is zoomed.
• NullReferenceException thrown on opening the CompletionListWindow when RadSyntaxEditor is hosted in a non-WPF application and there is no WPF Application and MainWindow initialized.

TabControl

FIXED

• Keyboard navigation with the Home and End keys does not consider the visibility of the tab items.

VirtualKeyboard

NEW

• Improved the task cancellation behavior in the Task started in the internal StartTrackingSystemCulture method, which now avoids unobserved OperationCanceledException.