Stable Composition in MEF

摘要

I have a Managed Extensibility Framework (MEF) part that I know is there, but it's not being imported. I can't figure out why. How do you go about debugging missing parts?rnStable composition was introduced in MEF Preview 7, and it also appears in beta 2 of.NET 4. For more on MEF and stable composition, see the Ask Kathleen columns "Getting Current on MEF" (September 2009) and "Working with MEF" (April 2009). Stable composition offers stability that keeps applications that are relying on MEF from failing when bugs or deployment errors make a plug-in unusable. However, it also creates significant debugging problems.