/// <summary>
/// Invoked as an event handler to navigate backward in the navigation stack
/// associated with this page's <see cref="Frame"/>.
/// </summary>
/// <param name="sender">Instance that triggered the event.</param>
/// <param name="e">Event data describing the conditions that led to the
/// event.</param>
protected virtual void GoBack(object sender, RoutedEventArgs e)
{
// Use the navigation frame to return to the previous page
IPageNavigator navigator = ServiceLocator.Instance.Resolve <IPageNavigator>();
if (navigator != null && navigator.CanGoBack)
{
navigator.GoBack();
}
}
