public AddressBookViewModel(AddressBook addressBook, Navigation navigation)
{
_addressBook = addressBook;
_navigation = navigation;
_summaries = new MappedObservableCollection<Person, PersonSummaryViewModel>(
person => new PersonSummaryViewModel(person),
_addressBook.People);
_navigation.PropertyChanged += NavigationPropertyChanged;
_newCommandObject = new CommandObject(
() =>
{
_navigation.SelectedPerson = _addressBook.NewPerson();
});
_deleteCommandObject = new CommandObject(
() => _navigation.SelectedPerson != null,
() =>
{
if (_navigation.SelectedPerson != null)
{
_addressBook.DeletePerson(_navigation.SelectedPerson);
_navigation.SelectedPerson = null;
}
});
}
private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
AddressBook addressBook = new AddressBook();
Navigation navigation = new Navigation();
DataContext = new AddressBookViewModel(addressBook, navigation);
addressBook.GetPeople(Dispatcher);
}