WPF Designer “Could not create an instance of type”

Question

In my UI XAML I\'m essentially inheriting from a class \"BaseView\" that contains functionality common to several forms, however this is preventing the designer from display

Answer 1

And another possible situation (this is actual for at least SL for WP):

If you create instanse of your class (ex. ) then it should be public. If your class is internal, it will work at design-time but will fail with this exception at runtime.