public string IWantToBuyOrderAdd(QueryCommon <IWantToSupplyQuery> query) { DateTime now = DateTime.Now; Result_Model <IWantToSupply> res = iWantToBuyService.GetObjectById_Supply(query.ParamInfo.Id); Result_Model <IWantToBuy_Orders> res1 = iWantToBuyService.AddIWantToBuyOrder(res.Model); return(Newtonsoft.Json.JsonConvert.SerializeObject(res)); }