Release History

Telerik UI for WinForms 2025.4.1321

January 21, 2026

What's new

NEW

• RadGridView - Provide an option to select columns using checkboxes in the Column Chooser.
• RadGridView - Improve sorting performance.
• RadVirtualGrid - Add a new sorting mode that disables the NoSort option.

Common

CHANGED

• 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.

Dependencies

• Telerik Document Processing Library (DPL) version updated to 2025.4.1319.
• Minimum required Telerik Licensing version updated to 1.6.36.

RadGridView

NEW

• Provide an option to select columns using checkboxes in the Column Chooser.
• Improve sorting performance.

RadMaskedEditBox

FIXED

• DoubleClick event is not raised.

RadMultiColumnComboBox

FIXED

• The height of the grid in the popup becomes larger when it contains only one row.

RadPdfViewer

FIXED

• Document hyperlinks do not scroll the page to their specified locations.

RadRichTextEditor

FIXED

• The BackColor property does not work in Web Layout mode.

RadTreeView

FIXED

• Nodes disappear from the hierarchy when expanding another node and scrolling with the mouse wheel.

RadVirtualGrid

NEW

• Add a new sorting mode that disables the NoSort option.

FIXED

• AddNewRow is not visible when the RowCount == 0.

TPF

FIXED

• NullReferenceException is thrown during EndUpdate() under heavy Garbage Collector activity.

TPF Designtime Support

FIXED

• Double serialization of the text and image properties in RadButton and RadLabel controls.