R – Choosing a .Net Inversion of Control container for first attempt at Dependency Injection

The difference may seem slight, but even with the ServiceLocator, the class is still responsible for creating its dependencies. It just uses the service locator to do it. With DI, the class is given its dependencies. It neither knows, nor cares where they come from. One important result of this is that the DI example is much easier to unit test -- because you can pass it mock implementations of its dependent objects. You could combine the two -- and inject the service locator (or a factory), if you wanted.

Your best bet is too look at one of the IOC/DI website

Spring.net http://www.springframework.net/

Castle Windsor http://www.castleproject.org/container/index.html

Structure Map http://structuremap.sourceforge.net/Default.htm

Good articles on comparison of IOC

http://blog.ashmind.com/index.php/2008/08/19/comparing-net-di-ioc-frameworks-part-1/

http://www.hanselman.com/blog/ListOfNETDependencyInjectionContainersIOC.aspx

I hope that helps. I personally have used Spring.Net and Castle Windsor - the latter probably easier to understand and use.

Have a look at this question as well. Examples of IoC Containers