MEF keeps reference of NonShared IDisposable parts, not allowing them to be collected by GC

Question

I\'ve encountered somewhat of a problem in MEF\'s part lifetime which causes memory leaks in my Prism application.

My application exports views and viewmodels with t

Answer 1

All the other answers provide good ways to circumvent this issue, but what I ended up doing eventually was using my own custom interface, ICleanup, instead of IDisposable. This of course may not be suitable for everyone.