Prism 7 throws and exception when working with nested views
问题 I posted similar question few months ago Working with nested views using Prism with IsNavigationTarget which can return false, I'm still not sure what is the proper way to do it. Imagine you have a view A, in this view A you have declared a region A, then you injected a view B into this region A. Similarly, in View B you have registered region B, and then you injected a view C into this region B. As it shown on the following picture: In the ViewModelA for ViewA, I have a method SetUpSubViews(