extensibility with sl4 and mef (en)
TRANSCRIPT
Construção de Soluções Extensíveis com Silverlight 4.0 e MEF
Nuno Godinho – Independent Consultant
Nuno Filipe GodinhoIndependent Consultant
Mail: [email protected]@sapo.pt
MSN: [email protected]
Blogs: http://pontonetpt.com/blogs/nunogodinhohttp://xamlpt.com/blogs/nunogodinhohttp://weblogs.asp.net/nunogodinhohttp://msmvps.org/blogs/nunogodinho
Twitter: NunoGodinho
About Me
Agenda
• Introduction to MEF• MEF and MVVM• Solution Modularity• Event Aggregation• Summary
Agenda
Introduction to MEF
• What is MEF - Managed Extensibility Framework?“MEF makes building extensible apps, libraries and frameworks easy” – Glenn Blockhttp://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
• Basic ConceptsAn Application is built using parts
Introduction to MEF
• Basic Concepts
Introduction to MEF
1. Import
2. Export
3. Compose
Modules
Functionalities
View ModelsApplication Parts
PagesActions
Shell Application
MEF and MVVM
DEMO:ViewModel Injection
DEMO:ViewModel Extensibility
Solution Modularity
DEMO:Dynamic XAP Loading
DEMO:Dynamic XAP Navigation
Event Aggregation
DEMO:Event Aggregation
Summary
• 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
• 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
Break the Coupling …Extend their limitsTightly Coupled
Summary
MEF
