ASP.NET MVC 2 Controller To View: IList or List?

Should I return from model to view an IList<T> object or a List<T>? I would iterate ove开发者_如何学Pythonr the Model collection and show the results in an ASP.NET MVC 2 view.

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I like to keep things as Generic as possible to help with Mocking during Testing later.

If you're simply iterating over the collection for a foreach loop, I would probably use IEnumerable<T> since you don't need any IList<T> functionality.

If you do need functionality from IList<T> (like iterating over a collection in a for loop using an index), then go ahead and use IList<T>.

There's really no need to pass a concrete class to a View, so I would never use List<T>.

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If all you want to do with the list is foreach, you should return an IEnumerable<T>.

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Either is fine; IList can help for mocking if you are going to test your views, but it really doesn't matter...