public static async Task <OperationResult <bool> > AddAndDelActivityProductAsync(string activityId, int stock, List <SalePromotionActivityProduct> addList, List <string> delList, string userName)
 {
     return(await OperationResult.FromResultAsync(DalSalePromotionActivity.AddAndDelActivityProductAsync(activityId, stock, addList, delList, userName)));
 }