The document discusses the Managed Extensibility Framework (MEF), which allows applications to be extended through external plugins and components. It provides an overview of MEF and how it allows third-party extensions, decouples internal application components, and enables overriding default functionality. The document also demonstrates MEF through various code examples and is intended to explain how to build extensible applications using MEF.

1. Creating extensible
application using MEF
@Ben_Hall
Ben@BenHall.me.uk
Blog.BenHall.me.uk

2. Agenda
• MEF ABCs
• Extensibility in .Net 2.0
• Extensibility with MEF
• MEF Internally

3. Managed Extensibility
Framework

4. http://www.flickr.com/photos/leon_homan/2856628778/

5. http://www.flickr.com/photos/zen/2273186263/

6. External and Internal

8. http://www.flickr.com/photos/mag3737/1914076277/

9. MS-PL
http://www.flickr.com/photos/25501212@N05/2934269081/

11. http://www.flickr.com/photos/dunechaser/2918021174/

12. [Export]
I have something to offer

13. [Import]
I need something

14. Catalog
I know about some exports

15. Container
I know about everything

16. DEMO
HELLO WORLD

17. DEMO
MEFUNIT

19. DEMO
FROM 2.0 TO MEF

20. DEMO
BEYOND 3RD PARTY ADDINS

21. DEMO
BEING SELECTIVE

22. DEMO
ASP.NET MVC AND MEF

24. In summary...
http://www.flickr.com/photos/m0php/530526644/

25. Summary
• Extensibility
• Allows 3rd parties to hook-in
• Allows internals to be decoupled
• Override your built in defaults
• Part of .Net 4.0
• Available today from Codeplex

26. Thank you!
Twitter - @Ben_Hall
Blog.BenHall.me.uk
Ben@BenHall.me.uk

27. Resources
• http://blog.BenHall.me.uk
• http://www.codeplex.com/mef
• http://blogs.msdn.com/gblock