Question

  using (IDbCommand command = new SqlCommand())
         {
             IDbDataAdapter adapter = new SqlDataAdapter();
             DataSet ds = new DataSet();
             adapter.SelectCommand = command;
             command.Connection = _dataAccess.Connection;
             command.CommandType = CommandType.StoredProcedure;
             command.CommandText = "GetProcData";
             command.Parameters.Add(new SqlParameter("@ProcID  ", procId));

            adapter.Fill(ds);
            return ds.Tables[0].AsEnumerable();
         }

This returns an IEnumerable DataRow The question is that since the return is within the using statement, will it property dispose of the IDBCommand? I know I can easily refactor this so I change the scope of the DataSet outside of the using, but it is more of a wonder than anything else.

Answer 1

Yes, this will work as expected with IDbCommand being properly disposed. The compiler will transform the using block to a try-catch-finally, where Dispose is invoked in the finally block.