How to pass the UI Dispatcher to the ViewModel

Question

I\'m supposed to be able to access the Dispatcher that belongs to the View I need to pass it to the ViewModel. But the View should not know anything about the ViewModel, so

Answer 1

Some of my WPF projects I have faced the same situation. In my MainViewModel (Singleton instance), I got my CreateInstance() static method takes the dispatcher. And the create instance gets called from the View so that I can pass the Dispatcher from there. And the ViewModel test module calls CreateInstance() parameterless.

But in a complex multithread scenario it is always good to have an interface implementation on the View side so as to get the proper Dispatcher of the current Window.