C# connect MySql

using MySql.Data.MySqlClient; 

　　　　　　　MySqlDataReader rdr = null;
            MySqlConnection conn = null;
            MySqlCommand cmd = null;
            string cs = null;
            string query = null;
            try
            {
                cs = "server=localhost;port=3307;userid=root;password=1234;database=web";
                conn = new MySqlConnection(cs);
                conn.Open();
                MessageBox.Show("connected");
                query = "select * from service1";
                cmd = new MySqlCommand(query, conn);
                rdr = cmd.ExecuteReader();

                while (rdr.Read())
                {
                    string s = rdr.GetInt32(0) + ": " + rdr.GetString(1);
                    MessageBox.Show(s);
                }

                conn.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }