public void updateMySupply(HttpContext context) { context.Response.ContentType = "text/plain"; Supply supply = new Supply(); supply.Id = Convert.ToInt32(context.Request["Id"]); supply.SupplyName = context.Request["Name"]; supply.SupplyDesc = context.Request["Desc"]; supply.SupplyCategory.Id = Convert.ToInt32(context.Request["CategoryId"]); Dictionary <String, Object> dictionary = new Dictionary <string, object>(); string savepath = ""; List <SupplyImg> list = new List <SupplyImg>(); if (context.Request.Files.Count > 0) { for (int i = 0; i < context.Request.Files.Count; i++) { SupplyImg supplyImg = new SupplyImg(); supplyImg.Supply.Id = Convert.ToInt32(context.Request["Id"]); HttpPostedFile file1 = context.Request.Files["descImg" + i]; supplyImg.ImgStatus = Convert.ToInt32(context.Request["status" + i]); savepath = FileUtil.uploadImg(file1, "../images/"); supplyImg.ImgPath = savepath; list.Add(supplyImg); } } Boolean flag = supplyService.updateSupply(supply, list); if (flag) { dictionary.Add("success", "true"); } else { dictionary.Add("success", "false"); } context.Response.Write(JsonUtil.toJson(dictionary).ToString()); }