public NinjaShopListViewModel(NinjaViewModel n)
 {
     this._selectedNinja = n;
     ShowShoulders       = new RelayCommand(ShowItemsShoulders);
     ShowChest           = new RelayCommand(ShowItemsChest);
     ShowBelt            = new RelayCommand(ShowItemsBelt);
     ShowLegs            = new RelayCommand(ShowItemsLegs);
     ShowBoots           = new RelayCommand(ShowItemsBoots);
     ShowHead            = new RelayCommand(ShowItemsHead);
     ShopItems           = new ObservableCollection <ItemViewModel>();
     BuyItem             = new RelayCommand(Buy, CanBuy);
     AddItem             = new RelayCommand(Add);
     EditItem            = new RelayCommand(Edit, CanEdit);
     DeleteItem          = new RelayCommand(Delete, CanDelete);
 }
 public AddNinjaViewModel(NinjaListViewModel ninjaListViewModel)
 {
     _ninja = new NinjaViewModel();
     _ninjaListViewModel = ninjaListViewModel;
     AddNinja            = new RelayCommand(Add);
 }