MemoryStream.Close() or MemoryStream.Dispose()

Question

Which one do I call?

Is it necessary to call both?

Will the other throw an exception if I have already called one of them?

Answer 1

Which one do I call?

Any of them.

Is it necessary to call both?

No, either one is sufficient.

Will the other throw an exception if I have already called one of them?

No, disposable pattern declares that subsequent calls to Dispose don't cause negative effects.