It is very common to have base classes and interfaces that use generic types to define standard behaviors across business applications. One challenge with the Managed Extensibility Framework is that it doesn't directly support generic exports and imports: in other words, there is no way to effectively do the following: ...

Been working with a lot of customers using the MVVM pattern with MEF and the issue always comes up regarding how to marry views to view models. There have a been a few musings on this, from my own ViewModel locator pattern to the even more advanced (and elegant) locator proposed by John Papa et al. This is another pattern you may find useful. ...