App_Code/Common/Backup.cs

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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Security;

/// <summary>
/// Backup 的摘要说明
/// </summary>
/// 
namespace NT.Common
{
    public class Backup
    {
        public Backup()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }
        ///<summary>
        /// //备份到本地源码，采用流形式：
        /// </summary>
        ///<param name="localaddress">客户端保存的文件名 </param>
        ///<param name="serveraddress">//web路径 //以字符流的形式下载文件 </param>
        public static void Backlocal(string localaddress,string serveraddress)
        {
            string fileName = localaddress;//"xlppccenter.mdb";//客户端保存的文件名 
            string filePath =System.Web.HttpContext.Current.Server.MapPath(serveraddress); //Server.MapPath("~/App_Data/xlppccenter.mdb");//路径 //以字符流的形式下载文件 
            FileStream fs = new FileStream(filePath, FileMode.Open);
            byte[] bytes = new byte[(int)fs.Length]; fs.Read(bytes, 0, bytes.Length);
            fs.Close();
            
            HttpContext.Current.Response.ContentType = "application/octet-stream"; //通知浏览器下载文件而不是打开
            HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
            HttpContext.Current.Response.BinaryWrite(bytes);
            HttpContext.Current.Response.Flush();
            HttpContext.Current.Response.End();
        }

        ///<summary>
        ///备份到网络中的代码：也就是复制 返回一个值1代表备份成功 0代表失败
        /// </summary>
        ///<param name="serveraddress1">//web路径 原数据库 例如：@"~App_Code\xlppccenter.mdb" </param>
        ///<param name="serveraddress2">//web路径 要放在数据库地点 例如：@"~\backup\xlppccenter.mdb"</param>
        public static int BackWeb(string serveraddress1, string serveraddress2)
        {
            int no = 0;
            try
            {
                File.Copy(System.Web.HttpContext.Current.Server.MapPath(serveraddress1), System.Web.HttpContext.Current.Server.MapPath(serveraddress2));
                no = 1;
            }
            catch