Using statement question

Question

I have two questions.

1) Should you always use a using statement on a connection? So, I would use it on the connection and then another one on a reader within the c

Answer 1

To answer each one:

1) Yes, this would be best practice to dispose both as soon as possible.

2) using() will create two blocks, wrapped in each other in the same order. It will dispose the inner object (the reader) first, then dispose the object from the outer using (the connection).