/// <summary>
/// Populates the page with content passed during navigation. Any saved state is also
/// provided when recreating a page from a prior session.
/// </summary>
/// <param name="sender">
/// The source of the event; typically <see cref="Common.NavigationHelper"/>
/// </param>
/// <param name="e">Event data that provides both the navigation parameter passed to
/// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested and
/// a dictionary of state preserved by this page during an earlier
/// session. The state will be null the first time a page is visited.</param>
private async void navigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
//var group = await SampleDataSource.GetGroupAsync((String)e.NavigationParameter);
//this.DefaultViewModel["Group"] = group;
//this.DefaultViewModel["Items"] = group.Items;
DataModel.ComicQueryManager comicQueryManager = new DataModel.ComicQueryManager();
DataModel.ComicQuery query = e.NavigationParameter as DataModel.ComicQuery;
comicQueryManager.UpdateQueryResults(query);
this.DefaultViewModel["Group"] = query;
this.DefaultViewModel["Items"] = comicQueryManager.CurrentQueryResults;
if (e.PageState == null)
{
this.itemListView.SelectedItem = null;
// When this is a new page, select the first item automatically unless logical page
// navigation is being used (see the logical page navigation #region below.)
if (!this.UsingLogicalPageNavigation() && this.itemsViewSource.View != null)
{
this.itemsViewSource.View.MoveCurrentToFirst();
}
}
else
{
// Restore the previously saved state associated with this page
if (e.PageState.ContainsKey("SelectedItem") && this.itemsViewSource.View != null)
{
var selectedItem = await SampleDataSource.GetItemAsync((String)e.PageState["SelectedItem"]);
this.itemsViewSource.View.MoveCurrentTo(selectedItem);
}
}
}
/// <summary>
/// Invoked when an item is clicked.
/// </summary>
/// <param name="sender">The GridView (or ListView when the application is snapped)
/// displaying the item clicked.</param>
/// <param name="e">Event data that describes the item clicked.</param>
void ItemView_ItemClick(object sender, ItemClickEventArgs e)
{
// Navigate to the appropriate destination page, configuring the new page
// by passing required information as a navigation parameter
//var groupId = ((SampleDataGroup)e.ClickedItem).UniqueId;
//this.Frame.Navigate(typeof(SplitPage), groupId);
DataModel.ComicQuery query = e.ClickedItem as DataModel.ComicQuery;
if (query != null)
{
this.Frame.Navigate(typeof(SplitPage), query);
}
}
public void UpdateQueryResults(ComicQuery query)
{
Title = query.Title;
switch (query.Title)
{
case "LINQ makes queries easy":
LinqMakesQueryEasy();
break;
case "Expensive comics":
ExpensiveComics();
break;
case "LINQ is versatile 1":
LinqIsVersatile1();
break;
case "LINQ is versatile 2":
LinqIsVersatile2();
break;
case "LINQ is versatile 3":
LinqIsVersatile3();
break;
case "Group comics by price range":
GroupComicsByRange();
break;
case "Join purchases with prices":
JoinPurchasesWithPrices();
break;
case "All comics in the collection":
AllComics();
break;
}
}
