黑马程序员 ExecuteReader执行查询

 

using (SqlConnection conn = new SqlConnection("Data Source=.; Initial Catalog=MyTest;User ID=sa;Password=123456")) 
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = "select * from T_Student where Age<100";
                    using (SqlDataReader reader = cmd.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                           string name =  reader.GetString(1);
                           int age = reader.GetInt32(2);
                           MessageBox.Show(name + "," + age);
                        }
                    }
                }
            }