Backup1/houtai/backup.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.IO;
namespace 淮安协和门诊.houtai
{
    public partial class backup : System.Web.UI.Page
    {
        static string connstr = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"];//定义静态链接数据库参数
        SqlConnection Conn = new SqlConnection(connstr);//定义连接数据库连接对象conn
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string path = Server.MapPath("~//backup") + "//" + "sql.bak";
            string sql = "use master;backup database xhmz to disk ='" + path + "'";
            SqlCommand cmd = new SqlCommand(sql, Conn);//创建cmd对象，执行sql操作
            Conn.Open();//打开数据库连接
            cmd.ExecuteNonQuery();//执行cmd的执行函数
            Response.ContentType = "application/ms-download";
            System.IO.FileInfo file = new System.IO.FileInfo(path);//upload文件夹中存放了上传的资源文件,这里为资源文件的路径
            Response.Clear();
            Response.AddHeader("Content-Type", "application/octet-stream");
            Response.Charset = "utf-8";
            Response.AddHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(file.Name, System.Text.Encoding.UTF8));
            Response.AddHeader("Content-Length", file.Length.ToString());
            Response.WriteFile(file.FullName);
            Response.Flush();
            Response.Clear();
            Response.End();
        }
    }
}