C# 用GetString(),GetInt32,GetOrdinal获取数据库字段的值

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;

namespace ConsoleTest1
{
    class Program
    {
        static void Main(string[] args)
        {
            using (SqlConnection conn=new SqlConnection(@"Data Source=localhost;Initial Catalog=DB_Test;User ID=sa;PassWord=sa;Pooling=False"))
            {
                conn.Open();
                using (SqlCommand cmd = conn.CreateCommand())
                {
                    cmd.CommandText = "select * from T_test1";
                    using (SqlDataReader reader = cmd.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            string name = reader.GetString(reader.GetOrdinal("name"));
                            int id = reader.GetInt32(reader.GetOrdinal("id"));
                            string password=reader.GetString(reader.GetOrdinal("password"));
                            Console.WriteLine("id={0},name={1},password={2}", id, name, password);
                        }

                    }
                }
            }
            Console.WriteLine("test");
            Console.ReadKey();
        }
    }
}