Release History

Telerik UI for WinForms 2026.2.520 (2026 Q2)

May 20, 2026

What's new

NEW

• Telerik.WinForms.MCP is updated with project conversion tools.
• Speech-to-Text integration and multiple other enhancements in RadChat.

Common

CHANGED

• 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.

Dependencies

• Telerik Document Processing Library (DPL) version updated to 2026.2.519.
• Minimum required Telerik Licensing version updated to 1.8.2.

AI

NEW

• 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 expose the tools as a guided, AI-driven migration workflow.

Infrastructure

FIXED

• Remove the DPL AITools dlls from the AllControls NuGet package.

RadChat

NEW

• 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.

RadDropDownList

FIXED

• AccessibleName property is not respected by the Windows Narrator.

RadRichTextEditor

NEW

• Introduced support for the HyperlinkClicked event to be raised when clicking on a hyperlink that points to a bookmark in the document.