Should injected properties be disposed?

Question

Short best practice question: If an object A is injected into another object B, should then object B implement IDisposable and dispose A when B is disposed?

Answer 1

If you're referring to the dependency injection pattern, I think it depends on the knowledge in Object B about the implementation of Object A. The reason for doing dependency injection like this is usually because you do not know on beforehand how Object A will be implemented and whether it requires IDisposable. The only thing you know is the interface.

Adding this behavior would result in tighter coupling between the two classes, IMO.