protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (e.Parameter != null)
Item = ItemViewModel.FromItem(ItemsDataSource.GetItemById((int)e.Parameter));
else
throw new InvalidOperationException();
var backStack = Frame.BackStack;
var backStackCount = backStack.Count;
if (backStackCount > 0)
{
var masterPageEntry = backStack[backStackCount - 1];
backStack.RemoveAt(backStackCount - 1);
// Doctor the navigation parameter for the master page so it
// will show the correct item in the side-by-side view.
var modifiedEntry = new PageStackEntry(
masterPageEntry.SourcePageType,
Item.ItemId,
masterPageEntry.NavigationTransitionInfo
);
backStack.Add(modifiedEntry);
}
// Register for hardware and software back request from the system
SystemNavigationManager systemNavigationManager = SystemNavigationManager.GetForCurrentView();
systemNavigationManager.BackRequested += DetailPage_BackRequested;
systemNavigationManager.AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
var items = MasterListView.ItemsSource as List<ItemViewModel>;
if (items == null)
{
items = new List<ItemViewModel>();
foreach (var item in ItemsDataSource.GetAllItems())
{
items.Add(ItemViewModel.FromItem(item));
}
MasterListView.ItemsSource = items;
}
if (e.Parameter != null)
{
// Parameter is item ID
var id = (int)e.Parameter;
_lastSelectedItem =
items.Where((item) => item.ItemId == id).FirstOrDefault();
}
UpdateForVisualState(AdaptiveStates.CurrentState);
// Don't play a content transition for first item load.
// Sometimes, this content will be animated as part of the page transition.
DisableContentTransitions();
}
public static ItemViewModel FromItem(Item item)
{
var viewModel = new ItemViewModel();
viewModel._itemId = item.Id;
viewModel.DateCreated = item.DateCreated;
viewModel.Title = item.Title;
viewModel.Text = item.Text;
return viewModel;
}
private void MasterListView_ItemClick(object sender, ItemClickEventArgs e)
{
var clickedItem = (ItemViewModel)e.ClickedItem;
_lastSelectedProduct = clickedItem;
if (AdaptiveStates.CurrentState == NarrowState)
{
// Use "drill in" transition for navigating from master list to detail view
Frame.Navigate(typeof(DetailPage), clickedItem.ItemId, new DrillInNavigationTransitionInfo());
}
else
{
// Play a refresh animation when the user switches detail items.
EnableContentTransitions();
}
}
public static ItemViewModel FromItem(Product product)
{
var viewModel = new ItemViewModel
{
ItemId = product.Id,
LowPrice = product.LowPrice,
Title = product.Title,
Brand = product.Brand,
Units = new List<UnitViewModel> { }
};
viewModel.Units = product.Units.OrderBy(p => p.Price)
.Select(UnitViewModel.FromUnit).ToList();
var defUnit = viewModel.Units.First();
viewModel.LowPrice = defUnit.Price;
return viewModel;
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
var items = MasterListView.ItemsSource as List<ItemViewModel>;
if (items == null)
{
items = ItemsDataSource.GetAllItems().Select(ItemViewModel.FromItem).ToList();
MasterListView.ItemsSource = items;
}
if (e.Parameter != null)
{
var id = (int)e.Parameter;
_lastSelectedProduct = items.FirstOrDefault(item => item.ItemId == id);
}
UpdateForVisualState(AdaptiveStates.CurrentState);
DisableContentTransitions();
}
