Question

Which of these methods is better for closing SqlDataReader:

 SqlDataReader reader = comm.ExecuteReader();

 while (reader.Read())
 {
 }
 reader.Close();
 reader.Dispose();

or

SqlDataReader reader = comm.ExecuteReader(CommandBehavior.CloseConnection);
while (reader.Read())
{
}

or there are another further closing methods?

Answer 1

The correct way of handling this is the using statement:

using(SqlDataReader reader = comm.ExecuteReader(CommandBehavior.CloseConnection)) {
    while (reader.Read())
    { 

    }
}

This way the object gets disposed correctly (and you don’t need to call Close()).