public List <string> GetPaymentMethodsWithId() { GetPaymentMethods(); PaymentMethodsNames = PaymentMethods.AsEnumerable().Select(r => r.Field <string>(1)).ToList(); PaymentMethodsIds = PaymentMethods.AsEnumerable().Select(r => r.Field <int>(0)).ToList(); return(DatabasetablesHelpers.CombineIdWithName(PaymentMethodsIds, PaymentMethodsNames)); }