protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
Controller.LoadColoringAsync(e.Parameter as ColoringBookColoring).ContinueWithoutWaiting();
// Enable Back button.
SystemNavigationManager.GetForCurrentView().BackRequested += ColoringPage_BackRequested;
PrintHelper = new PhotoPrintHelper(this);
PrintHelper.RegisterForPrinting();
// Initialize Dial Options.
RadialControlHelper.InitializeForColoringPage();
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
// Disable Back button.
SystemNavigationManager.GetForCurrentView().BackRequested -= ColoringPage_BackRequested;
// Deregister printer helper.
PrintHelper?.UnregisterForPrinting();
InkToolbar.UnregisterRadialController();
var display = DisplayInformation.GetForCurrentView();
display.DpiChanged -= Display_DpiChanged;
// Remove custom dial options.
RadialControlHelper?.Unregister();
Controller.CleanUp();
}
