C#中使用存储过程

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            SqlConnection conn = new SqlConnection("Server=zhuobin;uid=sa;pwd=zhuobin;database=Northwind");
            try
            {
                conn.Open();
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = "sp_selectAll";
                SqlDataReader rdr = cmd.ExecuteReader();
                while (rdr.Read())
                {
                    Console.WriteLine("{0}{1}{2}", rdr[0].ToString().PadRight(5), rdr[1].ToString(), rdr[2].ToString());

                } rdr.Close();
            }
            catch (SqlException ex)
            {
                Console.WriteLine("The Error:{0}", ex.Message);
            }
            finally
            {
                conn.Close();
            } Console.ReadKey();
        }
    }
}