public async Task AddAddress(Address address)
        {
            AddressRestService addressRestService = new AddressRestService();

            created_address = await addressRestService.SaveAddressAsync(address, true);

            Customer_Address customer_Address = new Customer_Address();
            customer_Address.CustomerID = created_account.Customer.CustomerID;
            customer_Address.AddressID = created_address.AddressID;
            customer_Address.AddressLabel = "Default";

            Customer_AddressRestService customer_AddressRestService = new Customer_AddressRestService();
            await customer_AddressRestService.SaveCustomer_AddressAsync(customer_Address, true);

        }
        //add an aditional address to customer account
        async void AddAddressClicked()
        {
            CustomerAddressValidator customer_address_validator = new CustomerAddressValidator();
            ValidationResult         results = customer_address_validator.Validate(address); //validate address

            if (!results.IsValid)                                                            //invalid - show error
            {
                String result_messages = results.ToString("\n");
                await Application.Current.MainPage.DisplayAlert("Error", result_messages, "OK");
            }
            else //valid try to save address
            {
                AddressRestService          addressRestService          = new AddressRestService();
                Customer_AddressRestService customer_AddressRestService = new Customer_AddressRestService();
                Address created_address = await addressRestService.SaveAddressAsync(address, true); //save address entry to db

                Customer_Address customer_Address = new Customer_Address();

                //gather customer_address data
                customer_Address.CustomerID   = (int)Application.Current.Properties["customerID"];
                customer_Address.AddressID    = created_address.AddressID;
                customer_Address.AddressLabel = customer_address.AddressLabel;
                try //to save customer_address entry to db
                {
                    await customer_AddressRestService.SaveCustomer_AddressAsync(customer_Address, true);

                    await Application.Current.MainPage.DisplayAlert("Success", "Address Saved", "OK");

                    await Application.Current.MainPage.Navigation.PushAsync(new AccountManagementPage());
                }
                catch (Exception e)
                {
                    await Application.Current.MainPage.DisplayAlert("Error", e.Message, "OK");
                }
            }
        }