Catel.MVVM.Navigation.NavigationAdapter.OnBackPressed C# (CSharp) Method

        private void OnBackPressed(object sender, BackPressedEventArgs e) 
        { 
            var rootFrame = NavigationRoot as Frame;
            if (rootFrame != null && rootFrame.CanGoBack) 
            { 
                rootFrame.GoBack();
 
                // Indicate the back button press is handled so the app does not exit 
                e.Handled = true; 
            } 
        } 
#endif