private void populate(List <Book> books)
{
ViewModel = new ViewModel();
foreach (Book b in books)
{
ViewModel.Books.Add(b);
}
this.DataContext = ViewModel;
ItemDetailFrame.Navigate(typeof(NoItemSelected));
BookListLabel.Text = String.Format("Books Found ({0})", books.Count());
ViewModel.PropertyChanged += (sender, args) =>
{
if (args.PropertyName == "SelectedItemIndex")
{
if (ViewModel.SelectedItemIndex == -1)
{
ItemDetailFrame.Navigate(typeof(NoItemSelected));
}
else
{
ItemDetailFrame.Navigate(typeof(ItemDetail), ViewModel);
}
}
};
}
public ListPage()
{
viewModel = new ViewModel();
viewModel.StoreList.Add("Whole Foods");
viewModel.StoreList.Add("Kroger");
viewModel.StoreList.Add("Costco");
viewModel.StoreList.Add("Walmart");
viewModel.GroceryList.Add(new GroceryItem {
Name = "Apples",
Quantity = 4, Store = "Whole Foods"
});
viewModel.GroceryList.Add(new GroceryItem {
Name = "Hotdogs",
Quantity = 12, Store = "Costco"
});
viewModel.GroceryList.Add(new GroceryItem {
Name = "Soda",
Quantity = 2, Store = "Costco"
});
viewModel.GroceryList.Add(new GroceryItem {
Name = "Eggs",
Quantity = 12, Store = "Kroger"
});
this.InitializeComponent();
this.DataContext = viewModel;
ItemDetailFrame.Navigate(typeof(NoItemSelected));
viewModel.PropertyChanged += (sender, args) => {
if (args.PropertyName == "SelectedItemIndex")
{
if (viewModel.SelectedItemIndex == -1)
{
ItemDetailFrame.Navigate(typeof(NoItemSelected));
}
else
{
ItemDetailFrame.Navigate(typeof(ItemDetail), viewModel);
}
}
};
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
viewModel = (ViewModel)e.Parameter;
ItemDetailFrame.Navigate(typeof(NoItemSelected));
viewModel.PropertyChanged += (sender, args) => {
if (args.PropertyName == "SelectedItemIndex")
{
if (viewModel.SelectedItemIndex == -1)
{
ItemDetailFrame.Navigate(typeof(NoItemSelected));
AppBarDoneButton.IsEnabled = false;
}
else
{
ItemDetailFrame.Navigate(typeof(ItemDetail), viewModel);
AppBarDoneButton.IsEnabled = true;
}
}
};
}