public MainPage()
{
InitializeComponent();
// Sample code to localize the ApplicationBar
//BuildLocalizedApplicationBar();
Loaded +=MainPage_Loaded;
Messenger.Default.Register<UserLoggedInMessage>(this, OnUserLoggedIn);
Messenger.Default.Register<SelectIndexMessage>(this, OnSelectIndexMessage);
_settingsService = ServiceLocator.Current.GetInstance<ISettingsService>();
_viewModelContextService = ServiceLocator.Current.GetInstance<IViewModelContextService>();
_smartOfflineService = ServiceLocator.Current.GetInstance<ISmartOfflineService>();
_navigationService = ServiceLocator.Current.GetInstance<INavigationService>();
_userService = ServiceLocator.Current.GetInstance<IUserService>();
MaybeUserIsLoggedIn();
}