// The Blank Application template is documented at http://go.microsoft.com/fwlink/?LinkId=234227
/// Provides application-specific behavior to supplement the default Application class.
sealed partial class App : Application
/// 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().
this.Suspending += OnSuspending;
/// 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.
/// <param name="args">Details about the launch request and process.</param>
protected override void OnLaunched(LaunchActivatedEventArgs args)
Frame rootFrame = Window.Current.Content as Frame;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (rootFrame == null)
// Create a Frame to act as the navigation context and navigate to the first page
rootFrame = new Frame();
if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
//TODO: Load state from previously suspended application
// Place the frame in the current Window
Window.Current.Content = rootFrame;
if (rootFrame.Content == null)
// When the navigation stack isn't restored navigate to the first page,
// configuring the new page by passing required information as a navigation
if (!rootFrame.Navigate(typeof(MainPage), args.Arguments))
throw new Exception("Failed to create initial page");
// Ensure the current window is active
/// 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.
/// <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
By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.
If a file you wish to view isn't highlighted, and is a text file (not binary), please
let us know and we'll add colourisation support for it.
This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)