Attend the Canary Wharf Dot Net User Group's (CWDNUG) first meeting to hear Infusion's C# disciple, Marlon Grech, speak about Managed Extensibility Framework (MEF) and his new framework that lends the power of MEF to MVVM. 

What you can expect to learn:

1. The Managed Extensibility Framework is a new feature of .NET 4 that simplifies the development of pluggable applications. During this presentation, learn how to apply WPF to any development tasks that require a simple but powerful plug-in system.

2. MVVM (Model-View-ViewModel) is a design pattern particularly well suited for WPF. Learn how MVVM can be enhanced with MEF to provide design-time services to your ViewModels while they run inside Expression Blend's WYSIWYG designer.