2. Construção de Soluções Extensíveis com Silverlight 4.0 e MEF Nuno Godinho – Independent Consultant

3. Construção de Soluções Extensíveis com Silverlight 4.0 e MEF Nuno Godinho – Independent Consultant

5. Nuno Filipe Godinho Independent Consultant Mail: Nuno.Godinho@itech4all.com Nuno.Godinho@sapo.pt MSN: Nuno_God@hotmail.com Blogs: http://pontonetpt.com/blogs/nunogodinho http://xamlpt.com/blogs/nunogodinho http://weblogs.asp.net/nunogodinho http://msmvps.org/blogs/nunogodinho Twitter: NunoGodinho About Me

6. Agenda

7. Introduction to MEF MEF and MVVM Solution Modularity Event Aggregation Summary Agenda

8. Introduction to MEF

9. What is MEF - Managed Extensibility Framework? “MEF makes building extensible apps, libraries and frameworks easy” – Glenn Block http://blogs.msdn.com/b/gblock/archive/2008/09/26/what-is-the-managed-extensibility-framework.aspx “New library in .NET Framework 4 and Silverlight 4 that addresses the extensibility problem by simplifying the design of extensible applications and components” http://mef.codeplex.com/ Introduction to MEF

10. Basic Concepts An Application is built using parts Introduction to MEF

11. Basic Concepts Introduction to MEF 3. Compose Shell Application View Models Modules Application Parts 1. Import Pages Actions Functionalities 2. Export

12. MEF and MVVM

13. DEMO: ViewModel Injection

14. DEMO: ViewModel Extensibility

15. Solution Modularity

16. DEMO: Dynamic XAP Loading

17. DEMO: Dynamic XAP Discovery

18. DEMO: Dynamic XAP Navigation

19. Event Aggregation

20. DEMO: Event Aggregation

21. Summary

22. We can achieve a very high degree of Extensibility in our Applications by using MEF MEF with MVVM is possible and can give us: ViewModel Injection ViewModel Extensibility ... Summary

23. Our Solutions sparsed into several XAP’s to gain Performance Solutions can be much more easily integrated maintaining the loose coupling, using Event Aggregation Summary

24. Summary MEF Extend their limits Tightly Coupled Break the Coupling …

25. Nuno Godinho Partner @ ITech4all Nuno.Godinho@sapo.pt NunoGodinho