protected override void OnNavigatedTo(NavigationEventArgs e)
{
rootPage.NotifyUser("To show the settings charm window, invoke the charm bar by swiping your finger on the right edge of the screen or bringing your mouse to the lower right corner of the screen, then select Settings. Or you can just press Windows logo + i. To dismiss the settings charm, tap in the application, swipe a screen edge, right click, invoke another charm or application.", NotifyType.StatusMessage);
}
}