how to decouple controller from Http context session

Question

I need to store some data in session inside my action however I'm concerned about coupling my controller to the http context session, I have thought about creating a service, but is it really worth it?

Answer 1

No, it isn't worth it. It is the controller that has access to the Http Context including the session. Not to mention that you already are working with an abstraction of the session: HttpSessionStateBase which can be easily mocked in a unit test.

There might be situations where you could have your business methods take ICollection as input parameter which is an interface implemented by HttpSessionStateBase and then have the controller pass the Session object to them.