using System; using System.Collections.Generic; using System.IO; using System.Linq; using Windows.ApplicationModel; using Windows.ApplicationModel.Activation; using Windows.Foundation; using Windows.Foundation.Collections; using Windows.UI.Xaml; using Windows.UI.Xaml.Controls; using Windows.UI.Xaml.Controls.Primitives; using Windows.UI.Xaml.Data; using Windows.UI.Xaml.Input; using Windows.UI.Xaml.Media; using Windows.UI.Xaml.Navigation; // The Blank Application template is documented at http://go.microsoft.com/fwlink/?LinkId=234227 namespace MultiselectSample { /// <summary> /// Provides application-specific behavior to supplement the default Application class. /// </summary> sealed partial class App : Application { /// <summary> /// Initializes the singleton application object. This is the first line of authored code /// executed, and as such is the logical equivalent of main() or WinMain(). /// </summary> public App() { this.InitializeComponent(); this.Suspending += OnSuspending; } /// <summary> /// Invoked when the application is launched normally by the end user. Other entry points /// will be used when the application is launched to open a specific file, to display /// search results, and so forth. /// </summary> /// <param name="args">Details about the launch request and process.</param> protected override void OnLaunched(LaunchActivatedEventArgs args) { // Do not repeat app initialization when already running, just ensure that // the window is active if (args.PreviousExecutionState == ApplicationExecutionState.Running) { Window.Current.Activate(); return; } if (args.PreviousExecutionState == ApplicationExecutionState.Terminated) { //TODO: Load state from previously suspended application } // Create a Frame to act navigation context and navigate to the first page var rootFrame = new Frame(); if (!rootFrame.Navigate(typeof(MainPage))) { throw new Exception("Failed to create initial page"); } // Place the frame in the current Window and ensure that it is active Window.Current.Content = rootFrame; Window.Current.Activate(); } /// <summary> /// Invoked when application execution is being suspended. Application state is saved /// without knowing whether the application will be terminated or resumed with the contents /// of memory still intact. /// </summary> /// <param name="sender">The source of the suspend request.</param> /// <param name="e">Details about the suspend request.</param> private void OnSuspending(object sender, SuspendingEventArgs e) { var deferral = e.SuspendingOperation.GetDeferral(); //TODO: Save application state and stop any background activity deferral.Complete(); } } }
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