public void addSupplyDescImg(HttpContext context)
        {
            SupplyImg supplyImg = new SupplyImg();

            supplyImg.Supply.Id = Convert.ToInt32(context.Request["Id"]);
            Dictionary <String, Object> dictionary = new Dictionary <string, object>();
            string  savepath = "";
            Boolean flag     = false;

            if (context.Request.Files.Count > 0)
            {
                for (int i = 0; i < context.Request.Files.Count; i++)
                {
                    HttpPostedFile file1 = context.Request.Files["descImg" + i];
                    savepath            = FileUtil.uploadImg(file1, "../images/");
                    supplyImg.ImgPath   = savepath;
                    supplyImg.ImgStatus = 1;
                    flag = supplyService.addSupplyImg(supplyImg);
                }
            }

            if (flag)
            {
                dictionary.Add("success", "true");
            }
            else
            {
                dictionary.Add("success", "false");
            }
            context.Response.Write(JsonUtil.toJson(dictionary).ToString());
        }