SqlConnection conn = new SqlConnection("Data source=.;Integrated Security=true; Initial Catalog=pubs");
conn.Open();
SqlCommand comm = new SqlCommand("select * from authors; select * from titles", conn);
SqlDataReader dr = comm.ExecuteReader(CommandBehavior.CloseConnection);
//To get the rows from first query
while (dr.Read())
{
	listBox1.Items.Add(dr[0].ToString());
}
// To get the rows from second query
dr.NextResult();
while (dr.Read())
{
	listBox1.Items.Add(dr[0].ToString());
}
dr.Close();