public async Task <bool> ValidateId(Supplier Supplier) { SupplierFilter SupplierFilter = new SupplierFilter { Skip = 0, Take = 10, Id = new IdFilter { Equal = Supplier.Id }, Selects = SupplierSelect.Id }; int count = await UOW.SupplierRepository.Count(SupplierFilter); if (count == 0) { Supplier.AddError(nameof(SupplierValidator), nameof(Supplier.Id), ErrorCode.IdNotExisted); } return(count == 1); }