public ActionResult GetFile(string id)

        {

            var path = _db.MailAtchs.Where(p => p.MailID == new Guid(id)).Select(p => p.Path);

            //获取文件名字

            ArrayList n = new ArrayList();

            foreach (var li in path)

            {

                var index = li.LastIndexOf('/');

                var pa = li.Substring(index + , li.Length - index - );

                n.Add(pa);

            }

            var info = new {FName = n, FPath = path };

            return Json(info, JsonRequestBehavior.AllowGet);

        }