public List<CouponUserListInfo> GetCouponUserList(int offset, int limit, int couponID, string couponCode, string userName, System.Nullable<int> couponStatusID, int storeID, int portalID, string cultureName)
 {
     try
     {
         CouponManageSQLProvider cmSQLProvider = new CouponManageSQLProvider();
         return cmSQLProvider.GetCouponUserList(offset, limit, couponID, couponCode, userName, couponStatusID, storeID, portalID, cultureName);
     }
     catch (Exception ex)
     {
         throw ex;
     }
 }