protected override async void OnNavigatedTo(NavigationEventArgs e)
{
await TitleBarHelper.ResetToDefaultsAsync();
var titleBarColor = (App.Current.Resources["SystemControlBackgroundChromeMediumBrush"] as SolidColorBrush).Color;
TitleBarHelper.SetBackgroundColor(titleBarColor);
TitleBarHelper.SetButtonBackgroundColor(titleBarColor);
Messenger.Default.Register <CompleteMultipleSelectionMessage>(this, message => DisableMultipleSelection());
}