Tag Archives: dependency injection

Extending MEF

In the last days of 2010 Mark Seemann announced a Christmas challenge concerning MEF. MEF uses attributes to export objects and inject them later where needed. The challenge was to find a way how to export objects and inject them in constructors without using attributes. Personally I don’t have much experience with MEF because I have mostly worked with other DI containers like autofac and Ninject. I like puzzles like this so I started experimenting. The first thought I had when I saw the chanllenge was about fluent MEF. I knew there was already such a project but I didn’t know its progress. So I started investigating MEF’s extensibility points.

MEF offers a few ways for extensibility. Each of them has its pros and cons so you have to decide which one fits best in your solution. Continue Reading…

ASP.NET MVC DI with Common Service Locator and NInject

I think everyone knows about Dependency Injection (DI) and how important it is when it comes to building low-coupled components. There are many IoC (Inversion of Control) containers. The most popular are

Each of them has its own pros and cons. I have been using NInject for years and I am really happy with it. Autofac is quite a new DI framework which shows really good results on benchmarks. You can find information for all DI frameworks on their websites or just google them for comparison. Continue Reading…