Multiples Table in DataReader

Question

I normally use DataSet because It is very flexible. Recently I am assigned code optimization task , To reduce hits to the database I am changing two queries in

Answer 1

I have tried to reproduce this issue (also because i haven't used multiple tables in a reader before). But it works as expected, hence i assume that you've omitted the related code.

Here's my test code:

using (var con = new SqlConnection(Properties.Settings.Default.ConnectionString))
{
    using (var cmd = new SqlCommand("SELECT TOP 10 * FROM tabData; SELECT TOP 10 * FROM tabDataDetail;", con))
    {
        int rowCount = 0;
        con.Open();
        using (IDataReader rdr = cmd.ExecuteReader())
        {
            while (rdr.Read())
            {
                String object1 = String.Format("Object 1 in Row {0}: '{1}'", ++rowCount, rdr[0]);
            }
            if (rdr.NextResult())
            {
                rowCount = 0;
                while (rdr.Read())
                {
                    String object1 = String.Format("Object 1 in Row {0}: '{1}'", ++rowCount, rdr[0]);
                }
            }
        }
    }
}