public ChangeRoomControl(RoomControlViewModel roomVM)
 {
     InitializeComponent();
     _oldRoomVM  = roomVM;
     ViewModel   = new ChangeRoomControlViewModel(roomVM.Room);
     DataContext = ViewModel;
     RoomComboBox.ItemsSource = ViewModel.Rooms;
     this.WhenActivated(BindView);
 }
        public CustomerControl(RoomControlViewModel roomControlViewModel)
        {
            InitializeComponent();
            this.WhenActivated(BindView);
            ViewModel              = new CustomerControlViewModel(roomControlViewModel);
            DataContext            = ViewModel;
            IdComboBox.ItemsSource = ViewModel.Customers.Select(x => x.Identity).ToList();
            var provinces = Utility.GetProvinces();
            var countries = Utility.GetNations();

            IssuePlaceComboBox.ItemsSource = provinces;
            BirthPlaceComboBox.ItemsSource = provinces;
            CitiesComboBox.ItemsSource     = provinces;
            CountriesComboBox.ItemsSource  = countries;
        }