C#操作各种执行sql的方法含存储过程操作

using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;
using System.Xml;
using System.Data;
namespace MyDbTest
{
class Program
{
static void Main(string[] args)
{
SqlConnection thisConnection = new SqlConnection(
@"Data Source=localhost;Initial Catalog=CSGL;Persist Security Info=True;User ID=test;Password=test");
thisConnection.Open();
SqlCommand myCommand = new SqlCommand("P_Test", thisConnection);
myCommand.CommandType = CommandType.StoredProcedure;
//添加输入查询参数、赋予值
myCommand.Parameters.Add("@id", SqlDbType.Int);
myCommand.Parameters["@id"].Value = "120";
//添加输出参数
myCommand.Parameters.Add("@Rowcount", SqlDbType.Int);
myCommand.Parameters["@Rowcount"].Direction = ParameterDirection.Output;
myCommand.ExecuteNonQuery();
//得到存储过程输出参数
Console.WriteLine(" 存储过程的参数"+ myCommand.Parameters["@Rowcount"].Value.ToString());
thisConnection.Close();
Console.ReadLine();

//SqlCommand thisCommand = thisConnection.CreateCommand();
//thisCommand.CommandText = "select count(*) from stu";
////ExecuteScalar：执行只返回一个值的SQL命令。
//object countResult = thisCommand.ExecuteScalar();
//Console.WriteLine("Count of Customers={0}", countResult);
//thisConnection.Close();
//Console.ReadLine();

//SqlCommand thisCommand = thisConnection.CreateCommand();
//thisCommand.CommandText = "update stu set snm='haha' where id=120";
////Inset,Update,Delelte的数据修改操作也不返回任何数据，
////我们对这些命令感兴趣的是修改操作影响的行数，可以用ExecuteNonQuery()方法
//int rowsAffected = thisCommand.ExecuteNonQuery();
//Console.WriteLine("Rows Updated={0}", rowsAffected);
//thisConnection.