public IMessageProvider Save() { if (string.IsNullOrWhiteSpace(commodityNo)) { AddError(1, "请输入商品编码"); return(this); } var commdity = CommodityService.GetBycommodityNo(commodityNo); if (commdity == null) { AddError(1, "商品编码不存在"); return(this); } var model = SecondKillCommoditysService.GetById(Id); if (model != null) { model.commodityId = commdity.commodityId; model.num = num; model.price = price; model.surplusNum = num - model.payNum; model.commodityNo = commodityNo; SecondKillCommoditysService.Update(model); } AddMessage("success"); return(this); }