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StyleManager.ApplicationTheme is Null
Updated on Mar 18, 2026
Environment
| Product Version | 2020.2.617 |
| Product | UI for WPF |
Description
The StyleManager.ApplicationTheme property is always null, even if it was explicitly set beforehand.
Solution
This happens if you're using the NoXaml assemblies. To resolve this, reference the Xaml version of the Telerik UI for WPF binaries instead.