private void LeaderboardClick(object sender, RoutedEventArgs e)
 {
     Leaderboard lb = new Leaderboard();
     this.NavigationService.Navigate(lb);
 }
        private void LeaderboardClick(object sender, RoutedEventArgs e)
        {
            Leaderboard lb = new Leaderboard();

            this.NavigationService.Navigate(lb);
        }