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92

answers:

2

I'm building a product that will ship after .Net 4.0 is released.

Is MEF an integral part of .Net 4.0, so I can count on them being released together, or is it some external component that might be released separately and thus it is dangerous to use?

+1  A: 

The Managed Extensibility Framework (MEF) is a new library in .NET Framework 4.0 that addresses this problem by simplifying the design of extensible applications and components.

Trickster
+1  A: 

Yes, MEF is the part of .NET Framework 4.0. It is located in assembly System.ComponentModel.Composition.dll. You can learn more here: MEF in MSDN

QrystaL