Issue with RibbonView / Tab in .NET Core (Prism) project

[Herald]

Hello

I am trying to migrate a WPF (Prism) project from .NET Framework to .NET Core.

I am having issues with some of the controls. To start with the RadRibbonView / Tab simply is not visible in both design and run time (see screenshots). I tried to replace it by dragging the controls from the Toolbox and I get the same result. 

The xaml code I am copying and pasting from an older project so maybe some property has changed, but I was expecting to see something at least in design time.

I am just hoping it is something rather simple.

To replicate, just create a new project: Prism Full App (.NET Core). pull (nuget) the telerik libraries (I did it from local nuget source), and replace MainWindow.xaml with attached.

I use Telerik.UI.for.Wpf.NetCore 2021.3.914

 

Thanks

Herald

 

[Martin Ivanov]

Hello Herald,

I hope you are doing well and thank you for the provided information.

You can read more about this situation in the Missing Controls in the UI article. The reason behind this is that the Telerik.UI.for.Wpf.NetCore nuget package contains the NoXaml version of the dlls. In this case, you will need to add also a nuget package with a Telerik theme and then merge the corresponding resources as described in the Setting a Theme article. 

Or alternatively, you can replace the nuget package with Telerik.UI.for.Wpf.NetCore.Xaml (with "Xaml" at the end) which contains the XAML version of the Telerik dlls, thus you won't need to install a theme nuget and also you won't need to merge any resources.

Note that if you use the offline nuget package files, you can get the Telerik_UI_for_WPF_2021_3_1109_NuGet_Xaml_Dev.zip file from your Downloads page.

Please try those suggestions and let me know if they help.

Regards,
Martin Ivanov
Progress Telerik