public void AddUtilityAccount(UtilityAccount utilityAccount) { if (utilityAccounts.Contains(utilityAccount)) { throw new Exception("Duplication or something... I don't know! Skrew you!"); } utilityAccounts.Add(utilityAccount); }
public static void AddUtilityAcountToCustomer(string customerId, UtilityAccount utilityAccount) { var customer = GetCustomerByIDFromRealDB(customerId); customer.AddUtilityAccount(utilityAccount); }