public MainViewModel(IBooksService booksService, IDialogService dialogService, IBooksStateService booksStateService)
{
_booksService = booksService ?? throw new ArgumentNullException(nameof(booksService));
_dialogService = dialogService ?? throw new ArgumentNullException(nameof(dialogService));
_booksStateService = booksStateService ?? throw new ArgumentNullException(nameof(booksStateService));
RefreshCommand = new DelegateCommand(OnRefresh);
ShowDialogCommand = new DelegateCommand(OnShowDialog);
}
public BookDetailViewModel(IDialogService dialogService, IBooksStateService booksStateService)
{
_dialogService = dialogService ?? throw new ArgumentNullException(nameof(dialogService));
_booksStateService = booksStateService;
_booksStateService.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == "SelectedBook")
{
Book = _booksStateService.SelectedBook;
}
};
Action1Command = new DelegateCommand(OnAction1);
}
