// Clear(delete) all pages private void Button_Click_4(object sender, RoutedEventArgs e) { p1 = null; p2 = null; p3 = null; Main.Content = null; }
private void Button_Click_2(object sender, RoutedEventArgs e) { if (p2 == null) { p2 = new Page2(); } Main.Content = p2.Content; }