Will putting a “using” statement around a DataReader close it?

Question

I usually write my DataReader code like this:

try
{
    dr = cmd.ExecuteReader(CommandBehavior.SingleResult);
    while (dr.Read())
    {
               


        

Answer 1

From what I can recall, if an exception occurs in a Using block, then the Dispose method is still called on the object. I usually have a Using statement for all disposable objects, without a Try..Catch.

EDIT: Forgot to say that for some objects, calling Dispose will in turn call Close for that object.