Your Application in Pieces - MEF and MAF

Speaker: Kathleen Dollard, MVP
When: Thursday, May 7th, 2009 6:30PM
Where: VersaTrans Solution, Latham, NY

Session Recording: For registered users only!

Slides and code: Coming soon!

Decoupling portions of your application has tremendous payback during both development and maintenance. Your application becomes more testable and flexible and can more easily evolve to meet changing demands. Decoupling your application also allows a new level of partnership with external groups because you can safely incorporate their code in your application without recompiling or releasing source code. Microsoft has exposed different provider models in many areas of the framework and libraries, and this year has moved toward consolidating its efforts at decoupling with the Managed Extensibility Framework, or MEF. This tool differs from an IoC container because its focused directly at simplifying the extension of applications and focuses at extensibility, discover, and composition. The underlying engine can support Microsoft efforts like Visual Studio and your own applications. MEF comes up short when you encounter isolation and versioning issues, such as wanting that external code to run in its own AppDomain. The Managed Add-In Framework, or MAF, focuses on these problems and the significant complexity they bring with System.AddIn namespace of .NET 3.5. You’ll learn more about architecting applications in pieces and the sweet spot of using MEF and MEF together. You’ll leave ready to evaluate the role of MEF and MAF in your applications.

Kathleen Dollard is a consultant, author, trainer, and speaker. She’s been a Microsoft MVP for over ten years and has spoken about .NET in 28 states and 5 countries. She’s written dozens of articles including the “Ask Kathleen” column in Visual Studio Magazine. She also wrote “Code Generation in Microsoft .NET” (Apress). Her passion is helping programmers be smarter in how they develop by learning to better use .NET languages, libraries and platforms. She works with WPF, WF, as well as core technologies including System.AddIn. She’s currently creating template infrastructure for code generation using VB XML literals. After working on the problem of capturing business intent in metadata and test definitions for years, she’s working with industry improvements in these areas. She’s also working on full life cycle improvements, such as unit testing, better debugging and static analysis (FxCop). When not working, she enjoys woodworking, snowshoeing, and kayaking depending on the outdoor temperature.