Using Windows.Application.Current.Dispatcher.Invoke in a wpf class library

Question

In WPF, in a class library, I use the Windows.Application.Current.Dispatcher.Invoke method to reference the window that contains the controls and my class.

To use this method, I added the PresentationFramework.dll and WindowsBase.dll references to the project.

It works perfectly.

The only problem, since these dlls are referenced to a folder related to the .net version, if I change the .net version, I have to change the dll references again.

Here is an example of the dlls folder for version .net 7.0.10 :

C:\Program Files\dotnet\packs\Microsoft.WindowsDesktop.App.Ref\7.0.10\ref\net7.0\PresentationFramework.dll.

Is there a solution to avoid this problem?

Is there another method in wpf to not use these dlls?

Answer 1

You just build a multi target library.

https://learn.microsoft.com/en-us/nuget/create-packages/multiple-target-frameworks-project-file

note: I think it’s a poor design for the library to know about calling back to the ui thread.