System.AddIn vs System.ComponentModel.Composition [duplicate]

This question already has answers here: Closed 10 years ago.

Possible Duplicate:

Choosing between MEF and MAF (System.AddIn)

What are the differences between the import and export functionality of the System.ComponentModel.Composition namespace vs开发者_C百科 the addin functionality of the System.AddIn namespace? Looks like there is some functionality overlap, so when should I be choosing one over the other?

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Hope these links helps you

1. Choosing between MEF and MAF (System.AddIn)
2. Is MEF a replacement for System.Addin?
3. http://blogs.msdn.com/b/kcwalina/archive/2008/06/13/mafmef.aspx