Telerik UI for WinForms Versionen

TelerikUI- und Visualisierungssuiten.NET
Version 2026 Q2 (2. Juli 2026)(1)

Erfahren Sie, was sich in den einzelnen Releases geändert hat – mit Details zu Funktionen, Verbesserungen und behobenen Problemen.

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Telerik UI for WinForms 2026 Q2 (2026.2.702)2. Juli 2026
Funktionen
  • Common:
    • The target framework-specific NuGet packages (UI.for.WinForms.AllControls.Net462/Net48/Net80/Net90) will be discontinued starting in Q3 2026. To reference a package containing all controls, use the multi-target Telerik.UI.for.WinForms.AllControls NuGet package instead.
  • Dependencies:
    • Updated Telerik Document Processing Library (DPL) version to 2026.2.624.
Korrekturen
  • RadNavigationView:
    • Fixed issue regarding a design time error message when using Property Builder in .NET Framework project.
  • RadPdfViewer:
    • Fixed exception: Could not load Microsoft.Web.WebView2.WinForms.
  • RadPropertyGrid:
    • Fixed issue where ReadOnlyAttribute is not respected when added to Attributes collection.
  • RadScheduler:
    • Appointments with a duration of less than 1 minute are not visible in RadPrintPreviewDialog.
  • RadSpreadsheet:
    • Incompatibility with Microsoft Excel of in-document Hyperlinks referencing worksheets with name containing spaces.
    • Worksheet name is editable when the workbook is protected.
  • RichTextEditor:
    • Underline color reset to black after export using RtfFormatProvider.
  • Visual Studio Extension:
    • WinForms Extension causes Visual Studio to crash.
    • Visual Studio 2026 becomes unresponsive when many files are saved.
Telerik UI for WinForms 2026 Q2 (2026.2.520)20. Mai 2026
Funktionen
  • What's New:
    • Telerik.WinForms.MCP is updated with project conversion tools.
    • Speech-to-Text integration and multiple other enhancements in RadChat.
  • Common:
    • The speech-to-text feature inside RadChat requires the WebView2. Ensure that your application includes the Microsoft.Web.WebView2 NuGet package as a dependency in order to use this functionality.
    • The target framework-specific NuGet packages (UI.for.WinForms.AllControls.Net462/Net48/Net80/Net90) will be discontinued starting in Q3 2026. To reference a package containing all controls, use the multi-target Telerik.UI.for.WinForms.AllControls NuGet package instead.
    • Updated Telerik Document Processing Library (DPL) version to 2026.2.519.
    • Updated minimum required Telerik Licensing version to 1.8.2.
  • AI:
    • Telerik UI for WinForms Converter (Preview) - new Roslyn-based conversion tools that transform standard Microsoft WinForms code (C# and VB.NET) to Telerik UI for WinForms equivalents. Integrated inside the Telerik.WinForms.MCP that exposes the tools as a guided, AI-driven migration workflow.
  • RadChat:
    • Improved input area with multiline text support.
    • Introduced reply functionality for responding to existing messages.
    • Integrated RadSpeechToTextButton for voice-to-text input.
    • Added support for file attachments.
  • RadRichTextEditor:
    • Introduced support for the HyperlinkClicked event to be raised when clicking on a hyperlink that points to a bookmark in the document.
Korrekturen
  • Infrastructure:
    • Removed the DPL AITools dlls from the AllControls NuGet package.
  • RadDropDownList:
    • Fixed issue where the AccessibleName property is not respected by the Windows Narrator.
Telerik UI for WinForms 2026 Q1 (2026.1.415)15. Apr. 2026
Funktionen
  • What's New:
    • RadForm - Implemented UI Automation support.
    • RadTitleBar - Implemented UI Automation support.
    • RadPanel - Implemented UI Automation support.
    • RadRichTextEditor - Introduced support for raising the HyperlinkClicked event when clicking a hyperlink that points to a bookmark in the document.
    • .NET Core Designer - Added support for the .NET globalization invariant mode.
  • Common (Dependencies):
    • Telerik Document Processing Library (DPL) version has been updated to 2026.1.402.
    • The minimum required Telerik Licensing version has been updated to 1.8.2.
  • .NET Core Designer:
    • Added support for the .NET globalization invariant mode.
  • RadForm:
    • Implemented UI Automation support.
  • RadPanel:
    • Implemented UI Automation support.
  • RadRichTextEditor:
    • Introduced support for raising the HyperlinkClicked event when clicking a hyperlink that points to a bookmark in the document.
    • The UpdateViewPort method of the SelectionUILayer class is now virtual to support overriding.
  • RadScheduler:
    • Added a public property to control the status width for the AppointmentElement.
  • RadTitleBar:
    • Implemented UI Automation support.
Korrekturen
  • RadCheckedDropDownList:
    • Fixed issue where the CheckAllItem was hidden after scrolling to the bottom and then back to the top.
  • RadCommandBar:
    • Fixed issue where the CommandBarButton.Click event was incorrectly fired when clicking with the right or middle mouse button.
  • RadContextMenu:
    • Fixed issue where an incorrect pop-up size was displayed when the pop-up content was changed in the PopupOpening event.
  • RadDropDownList:
    • Fixed issue where the RadDropDownListArrowButtonElement.Click event was incorrectly fired when clicking with the right or middle mouse button.
  • RadGridView:
    • Fixed issue where right-clicking a child level of the hierarchy grid header causes an unhandled exception.
    • Fixed a missing GridHeaderCellElement.Sort() method.
    • Fixed issue where adding a new worksheet to an existing workbook in a GridViewSpreadExport scenario causes corrupted output.
    • Fixed issue where setting the EnableFiltering property to true leads to a NullReferenceException.
  • RadMenu:
    • Fixed issue where using a non-existing mnemonic key would type characters into the focused input control. Introduced a new PropagateNonMnemonicKeys property to control this behavior.
  • RadPdfViewer:
    • Fixed issue where incorrect values are displayed in the RadDropDownListElement editor drop-down list.
    • Fixed issue where a NullReferenceException is thrown when loading a PDF file with editing controls generated by the PDF24 website.
  • RadPropertyGrid:
    • Fixed issue where ExpandableObject was not working correctly with multiple selected items.
    • Fixed issue where the mouse was not released when double-clicking an item and resizing the description area.
  • RadRibbonBar:
    • Exposed the TextPrimitive property on RadRibbonBarGroup.
  • RadRichTextEditor:
    • Fixed issue where placing a bookmark and a hyperlink in a structured document tag disables the hyperlink's navigation.
  • RadTextBox:
    • Fixed issue where the AccessibleName property of the text box or masked edit box was not respected by Windows Narrator.
  • RadVirtualGrid:
    • Fixed issue where columns disappeared after navigating with the left/right arrow keys when pinned columns were present.
  • VSB:
    • Fixed issue where Visual Style Builder threw an error for a missing VbsRecoveryData file.
Telerik UI for WinForms 2026 Q1 (2026.1.210)Hauptversion11. Feb. 2026
Funktionen
  • Common
    • Telerik Document Processing Library (DPL) version has been updated to 2026.1.210.
    • Minimum required Telerik Licensing version has been updated to 1.6.40.
  • New Controls
    • Added a new Speech-to-Text button.
  • RadMap
    • Added support for transparent images.
  • RadPictureBox
    • Added file path and image type information to the ImageLoaded event.
  • RadStepProgressBar
    • Added the StepClicked event to the control.
Korrekturen
  • RadRichTextEditor
    • Current editing style is not preserved when the document layout is refreshed.
    • Exception when pasting with 'Keep Source Formatting' if a style is missing from the document's style repository.
    • Exceptions occur when loading documents containing element tags without direct content that use opening and closing tags instead of self-closing tags.
    • Custom annotations are not rendered correctly when they have no content and are right-aligned.
    • Importing HTML that contains an image with an align attribute does not apply the alignment to the created image element in the document model.
    • Exporting documents (RadDocument) to .docx format produces an invalid file.
  • RadSpinEditor
    • When the NullableValue property is bound, the NullableValueChanged event is triggered even when the same value is applied.
  • RadSpreadsheet
    • Cannot unselect cells with the Ctrl key.
Telerik UI for WinForms 2025 Q4 (2025.4.1321)21. Jan. 2026
Funktionen
  • Common:
    • Starting with the upcoming Q2 2026 releases, the following legacy themes will no longer be supported for new controls: Desert, Aqua, Breeze, Windows 7, Office 2007 (Black/Silver), Office 2010 (Black/Blue/Silver), Office 2013 (Light/Dark). Support for existing controls using these themes will remain unchanged.
    • Updated Telerik Document Processing Library (DPL) version to 2025.4.1319.
    • Updated minimum required Telerik Licensing version to 1.6.36.
  • RadGridView:
    • Added an option to select columns using checkboxes in the Column Chooser.
    • Improved sorting performance.
  • RadVirtualGrid:
    • Added a new sorting mode that disables the NoSort option.
Korrekturen
  • RadMaskedEditBox:
    • Fixed issue where DoubleClick event is not raised.
  • RadMultiColumnComboBox:
    • Fixed issue where the height of the grid in the popup becomes larger when it contains only one row.
  • RadPdfViewer:
    • Fixed issue where document hyperlinks do not scroll the page to their specified locations.
  • RadRichTextEditor:
    • Fixed issue where the BackColor property does not work in Web Layout mode.
  • RadTreeView:
    • Fixed issue where nodes disappear from the hierarchy when expanding another node and scrolling with the mouse wheel.
  • RadVirtualGrid:
    • Fixed issue where AddNewRow is not visible when the RowCount == 0.
  • TPF:
    • Fixed issue where a NullReferenceException is thrown during EndUpdate() under heavy Garbage Collector activity.
  • TPF Designtime Support:
    • Fixed issue regarding double serialization of the text and image properties in RadButton and RadLabel controls.