2025 Releases

This article lists the breaking changes introduced with the Telerik UI for WPF releases in 2025. For the complete list of changes in the UI components, see the product release history.

Currently, this section of the documentation contains only the latest release notes (starting from 2025). For older changes, check the Breaking Changes and Backward Compatibility help articles of the individual Telerik controls.

2025 Q1

Common Changes

• The Telerik UI for WPF has a new licensing mechanism. Due to this, you need to either add the Telerik.Licensing NuGet package or reference the Telerik.Licensing.Runtime.dll . You also need to install a license key.

RichTextBox

• The ShouldPersist and ShouldStartNewComposition properties of the TextInsertedEventArgs class are now obsoleted. Use the ImeLanguage and CurrentEvent properties instead.

• The TextInsertedEventArgs(string text, bool shouldPersist, bool shouldStartNewComposition) constructor of the TextInsertedEventArgs class is now obsoleted. Instead, use the TextInsertedEventArgs(string text, InputEvents currentEvent, ImeLanguage imeLanguage) constructor.