MVC 中接受Flash的图片上传

/// <summary>
        /// 通过Flash上传图片
        /// </summary>
        /// <param name="uid"></param>
        /// <param name="jid"></param>
        /// <param name="sn"></param>
        /// <returns></returns>
        [HttpPost]
        public JsonResult SwfUploadImg(string uid,string jid,string sn)
        {
            try
            {
                HttpPostedFileBase file = Request.Files["Filedata"];
                string file_name = Common.GetNewImgName(file.FileName);
                file.SaveAs(Config.PicPath + file_name);
                return Json(new { status = true,msg = "上传成功！",filename = file_name });
            }
            catch (Exception ex)
            {
                return Json(new { status = false,msg = ex.Message });
            }
        }