Dependencies: Updated Telerik Document Processing Library (DPL) version to 2026.2.624.
Chat:
Improved MouseOver state of download attachment button in Material, VS2019 and Crystal themes.
修正
Common:
Fixed issue in a new Telerik csproj from VSExtensions using NuGets, trying to type in MainWindow.xaml freezes the VS window.
Fixed issue where the upgrade wizard for WPF does not work with projects targeting 4.8 .NET Framework.
BusyIndicator:
Fixed issue where the busy animation continues running in the background when the RadBusyIndicator gets unloaded.
Chart:
Fixed error when loading resources in for RadChart.
Chat:
Fixed issue where messages that use MessageDisplayPosition.Overlay and MessageDisplayPosition.Popup are not displayed when added before the chat is loaded.
RichTextBox:
Fixed issue where hovering a DocumentPosition instance in Visual Studio during debug shows DebuggerDisplay reaches max recursion count error.
Fixed unexpected cursor behavior with left arrow key.
Fixed memory leak when changing the documents.
Spreadsheet:
Fixed issue where the items in the named ranges drop down list don't display the underscore character if presented in the name of the range.
Telerik UI for WPF 2026 Q2 (2026.2.520)2026年5月20日
機能
What's New:
Enhanced the RadChat input area by adding the option to attach files and added RadSpeechToTextButton integration. TextMessages now support visualizing attached files.
Smart Grid Features allow you to perform various operations via AI prompts, including sorting, grouping, selecting, highlighting, and more.
Common:
The following NuGet packages: Telerik.UI.for.Wpf.462.Xaml, Telerik.UI.for.Wpf.80.Xaml, Telerik.UI.for.Wpf.462 and Telerik.UI.for.Wpf.80, which contained the full distribution, are discontinued with the current release. They are replaced by the new Telerik.UI.for.Wpf.AllControls.Xaml and Telerik.UI.for.Wpf.AllControls. These packages provide the same functionality by consolidating the core distribution components via dependencies. These packages are distributed as part of the Telerik_UI_for_WPF_[version]_NuGet_Separate_Packages_Xaml/NoXaml.
Telerik.Windows.Controls.Charting.for.Wpf.Xaml NuGet is no longer produced. The assembly can be consumed from the distribution zipped artifacts.
Satellite NuGet packages are no longer produced. The satellite assemblies are included in the Telerik.Windows.Controls NuGet.
Removed duplicated NullToVisibilityConverter objects from the Telerik.Windows.Controls.Schedule and Telerik.Windows.Controls.PivotFieldList assemblies.
Updated minimum required Telerik Licensing version to 1.8.2.
Updated Telerik Document Processing Library (DPL) version to 2026.2.519.
Chat:
Improved input area with multiline text support.
Integrated RadSpeechToTextButton for voice-to-text input.
Added support for file attachments.
Removed the toolbar related properties. Use the RadPromptInput API for commands instead. Added the RadSpeechToTextButton which requires adding the Microsoft.Web.WebView2 NuGet package.
Docking:
Introduced Minimize/Maximize buttons in the ToolWindow element.
GridView:
Smart Grid Features allow you to perform various operations via AI prompts, including sorting, grouping, selecting, highlighting, and more.
PivotGrid:
Added an option for the GenerateExport method to copy the raw data rather than the formatted one.
RichTextBox:
The UpdateViewPort method of the SelectionUILayer class is now virtual, so it can be overridden.
ScheduleView:
Added ActiveViewDefinitionChanged event.
Spreadsheet:
The menu items in the default context menu (WorksheetEditorContextMenu) are now localized.
修正
BusyIndicator:
Fixed issue where setting the BusyContent property to a UI element shows its ToString value instead of the UI element itself.
Fixed issue where watermark content is not localized dynamically.
GridView:
Fixed possible performance degradation when using numerous GridViewCheckBox cells.
PDF Viewer:
Fixed issue where images hosted inside multiple Form XObjects are not rendered.
Fixed issue where PDF documents get a lot of black/grey images.
PivotGrid:
Fixed wrong localization strings for the Spanish culture for some of the resource keys.
RichTextBox:
Fixed issue where a System.NullReferenceException is thrown when using the Ctrl + Left Mouse Button to select multiple separate text blocks or non-adjacent table cells.
ScheduleView:
Fixed issue where a XamlParseException is raised when opening the dialog to edit the recurrence of an appointment with the NoXaml assemblies.
Spreadsheet:
Fixed issue where the ScreenTip label in the Hyperlink dialog is vertically misaligned to the associated TextBox in the Windows 11 theme.
Telerik UI for WPF 2026 Q1 (2026.1.415)2026年4月15日
機能
Common:
Updated the licensing mechanism to display notification banners that provide information about the license status.
Updated TelerikWebUI and TelerikFluentIcons with additional icons.
Dependencies:
Minimum required Telerik Licensing version updated to 1.8.2.
Telerik Document Processing Library (DPL) version updated to 2026.1.402.
RichTextBox:
Introduced support for the HyperlinkClicked event to be raised when clicking on a hyperlink that points to a bookmark in the document.
Spreadsheet:
Added an option to exclude the columns of merged cells from the column/row click selection.
Added support for Strikethrough, Superscript and Subscript formatting options.
修正
Calendar:
Fixed issue where the wrong accessibility value is returned when navigating the drop-down items via the arrow keys.
RibbonView:
Fixed issue where key tips remain visible when pressing Alt+Tab and the KeyTipService.ActivationMode is set to PreviewKeyDown.
WatermarkTextBox:
Fixed issue where the label is not visible in the dark variation of the Fluent theme when the mouse is over the control.
Telerik UI for WPF 2026 Q1 (2026.1.211)メジャーバージョン2026年2月11日
機能
Common
The following NuGet Packages: Telerik.UI.for.Wpf.462.Xaml, Telerik.UI.for.Wpf.80.Xaml, Telerik.UI.for.Wpf.462, and Telerik.UI.for.Wpf.80, which contained the full distribution, will be discontinued in Q2 2026. They have been replaced by the new Telerik.UI.for.Wpf.AllControls.Xaml and Telerik.UI.for.Wpf.AllControls. These packages provide the same functionality by consolidating the core distribution components via dependencies. These packages are distributed as part of the Telerik_UI_for_WPF_[version]_NuGet_Separate_Packages_Xaml/NoXaml.
Minimum required Telerik Licensing version has been updated to 1.6.40.
Telerik Document Processing Library (DPL) version has been updated to 2026.1.210.
New Controls
Added a new Speech-to-Text button.
GridView
Introduced support for changing the threshold of the frozen columns splitter via Left/RightFrozenColumnSplitterThreshold properties.
Spreadsheet
Introduced multiple selection in the FindAll dialog.
SyntaxEditor
Added new JSON syntax highlight.
修正
Docking
Drag and drop between nested Docking instances is not possible.
GridView
CellUnloaded event is not invoked when the view is scrolled.
Map
NullReferenceException is thrown when reading a KML that contains an empty BalloonStyle tag.
RichTextBox
A NullReferenceException is raised when using analytics and working with the RadContextMenu.
Enhanced support for reversed table selection and edge-case scenarios.
FormatException occurs during table import from a DOCX document, when the app culture is set to Swedish (sv-SE).
Spreadsheet
Fill selection stops working after filtering out the currently selected cell.
SvgImage
An exception is raised when parsing degrees.
Telerik UI for WPF 2025 Q4 (2025.4.1321)2026年1月21日
機能
Common:
Added full support for dynamic localization. Now the feature covers all controls in the WPF suite.
Starting with upcoming Q2 2026 releases, the following legacy themes will no longer be supported for new controls: Expression Dark, Windows 7, Transparent, Vista, Summer, Office Silver and Office Blue. Support for existing controls in these themes will remain unchanged.
Updated Telerik Document Processing Library (DPL) version to 2025.4.1319.
Updated the minimum required Telerik Licensing version to 1.6.36.
Buttons:
Added new RadSpeechToTextButton control which provides out-of-the-box speech recognition functionality. Supports continuous or single-shot recognition, different languages and custom recognizers.
RichTextBox:
Added support for customizing hyperlink tooltips.
Improved keyboard selection behavior in tables with arrow keys to match MS Word.
Several existing methods in the KeyboardSelectionHandler class have been modified as detailed below: ExpandTopRight is removed; use the MoveActiveEnd method instead. ExpandDownLeft is removed: use the MoveActiveEnd method instead. UpdateSelection is removed; use the MoveActiveEnd method instead.
修正
Common:
Fixed issue where the licensing watermark is displayed over the Visual Studio application when a Telerik WPF control is hosted in the designer of a WinForms project.
DateRangePicker:
Fixed issue where an exception is raised when pasting strings containing non-digit chars.
FileDialogs:
Fixed issue where wildcard pattern *file.txt does not match files like samplefile.txt.
Menu:
Fixed issue where hovering the mouse over a RadMenuItem does not highlight the arrow button.
OfficeNavigationBar:
Fixed issue where an exception is raised when loading the control with the Office2013 theme applied via merging the Generic dictionary.
PersistenceFramework:
Fixed issue where an exception is raised when saving the layout in .NET 10 if there is a Grid with ColumnDefinition/RowDefinition objects.
RichTextBox:
Fixed issue where the current editing style is not preserved when the document layout is refreshed.