WP7 WP8 ViewMode中的导航区别

wp7:     

       PhoneApplicationFrame _frame = ((App)App.Current).RootFrame;

 

       _frame.Navigate(new Uri(@"/Views/PivotPageWindow.xaml", UriKind.RelativeOrAbsolute));

 

 

wp8:

      App.RootFrame.Navigate(new Uri(@"/Views/PivotPageWindow.xaml", UriKind.RelativeOrAbsolute));