大学期间项目笔记

         public ActionResult AsyncUpload()
         {
            return View();
         }
        [HttpPost]
         public ActionResult AsyncUpload(FormCollection collection)
         {
            var file = Request.Files[@Keys.UploadFile];
            if (file != null)
            {
                var fileName = Guid.NewGuid() + Path.GetExtension(file.FileName);
                var path = Path.Combine(Server.MapPath("~/UploadedFiles"), fileName);
                file.SaveAs(path);

                return Json(
                    new
                    {
                        FileContentType = file.ContentType,
                        FileName = file.FileName,
                        FilePath = path,
                        FileSize = (file.ContentLength/1024).ToString("N0") + "KB"
                    },
                    JsonRequestBehavior.AllowGet);
            }
            throw new Exception("上传文件失败");
         }