public static async Task <OperationResult <IList <SalePromotionActivityProduct> > > GetRepeatProductListAsync(string activityId, List <string> pidList) { if (pidList == null || pidList.Count == 0) { return(OperationResult.FromError <IList <SalePromotionActivityProduct> >("2", "pid集合为空")); } return(await OperationResult.FromResultAsync(DalSalePromotionActivity.GetRepeatProductListAsync(activityId, pidList))); }