public async Task <bool> ValidateId(CustomerType CustomerType) { CustomerTypeFilter CustomerTypeFilter = new CustomerTypeFilter { Skip = 0, Take = 10, Id = new IdFilter { Equal = CustomerType.Id }, Selects = CustomerTypeSelect.Id }; int count = await UOW.CustomerTypeRepository.Count(CustomerTypeFilter); if (count == 0) { CustomerType.AddError(nameof(CustomerTypeValidator), nameof(CustomerType.Id), ErrorCode.IdNotExisted); } return(count == 1); }