Won't Fix
Last Updated: 16 Jun 2021 14:03 by ADMIN
Created on: 27 May 2021 12:35
Category: Window
Type: Bug Report
Window: The control is not visible with .NET Core assemblies and the 16.9.0 version of the Visual Studio 2019 Designer
When the RadWindow is declared in XAML and is used as a main window, it won't show in the designer by simply merging the required theme resources and defining an implicit style based on the RadWindowStyle.

Tested with 16.8.4 - works as expected. Updated to 16.9.0 to match the client's setup and managed to reproduce the issue. The issue is reproducible also with the 16.10.0 version of Visual Studio.

1 comment
Posted on: 16 Jun 2021 14:02


We investigated the described behavior and also discussed it with Microsoft and they confirmed that they intentionally made a change in the 16.9 version of Visual Studio and its Designer, which is related to the fix of the following issue - UWP XAML designer: styles are getting applied to page though they shouldn't - Visual Studio Feedback.

Therefore, the current behavior remains the same and the status of this item - changed to Won't Fix. This means, that if a RadWindow is intended to be used as Main Window or UserControl in your WPF apps, you will need to explicitly set the style of its instance as follows to show it in the 16.9 version (and newer) of the Visual Studio Designer:

<telerik:RadWindow (namespaces omitted) ... Style="{StaticResource RadWindowStyle}">

Best Regards,
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