public ViewCViewModel(IMessageService messageService, MainWindowViewModel mainWindowViewModel) { _messageService = messageService; _mainWindowViewModel = mainWindowViewModel; MyListBox.Add("AAAA"); MyListBox.Add("BBBB"); MyListBox.Add("CCCC"); Areas.Add(new ComboBoxViewModel(1, "横浜")); Areas.Add(new ComboBoxViewModel(2, "岐阜")); Areas.Add(new ComboBoxViewModel(3, "名古屋")); SelectedArea = Areas[1]; AreaSelectionChanged = new DelegateCommand <object[]>(AreaSelectionChangedExecute); }