C#连接数据库sqlserver2005,并执行sql语句实例

C#连接数据库sqlserver2005,并执行sql语句实例:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;//头文件

namespace DBdemo1
{
    class Program
    {
        static void Main(string[] args)
        {
            //连接字符串,连接本地的sqlserver服务器
            string connstring = "Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=mapdemo;Data Source=PC-20130306BGML";
            //sql语句,更新表格中的学生姓名
            string sqlstring = "update students set studentname = 'zhangsan' where studentID = '123456'";

            //建立连接
            SqlConnection conn = new SqlConnection(connstring);
            conn.Open();
            //建立数据命令对象
            SqlCommand cmd = new SqlCommand(sqlstring, conn);

            //执行数据命令,返回受影响的行数
            int rowsreturned = cmd.ExecuteNonQuery();

            Console.WriteLine(rowsreturned);

            //关闭连接
            conn.Close();


        }
    }
}


 

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