Calling Dispose() vs when an object goes out scope/method finishes

Question

I have a method, which has a try/catch/finaly block inside. Within the try block, I declare SqlDataReader as follows:

SqlDataReader         


        

Answer 1

No, objects are not automatically disposed when they go out of scope.

They're not even guaranteed to be disposed if/when they're garbage-collected, although many IDisposable objects implement a "fallback" finaliser to help ensure that they're eventually disposed.

You are resposible for ensuring that any IDisposable objects are disposed, preferably by wrapping them in a using block.