private void continue_click(object sender, RoutedEventArgs e) { if (a5.IsChecked == true || a4.IsChecked == true || a3.IsChecked == true || a2.IsChecked == true || a1.IsChecked == true) { error.Visibility = Visibility.Hidden; if (count < 9) { count++; result.Content = "Result"; a1.IsChecked = false; a2.IsChecked = false; a3.IsChecked = false; a4.IsChecked = false; a5.IsChecked = false; a1.IsEnabled = true; a2.IsEnabled = true; a3.IsEnabled = true; a4.IsEnabled = true; a5.IsEnabled = true; tester(); } else { label.Visibility = Visibility.Visible; Start.Visibility = Visibility.Visible; r.writer(); image.Visibility = Visibility.Hidden; question.Visibility = Visibility.Hidden; a1.Visibility = Visibility.Hidden; a2.Visibility = Visibility.Hidden; a3.Visibility = Visibility.Hidden; a4.Visibility = Visibility.Hidden; a5.Visibility = Visibility.Hidden; cont.Visibility = Visibility.Hidden; result.Visibility = Visibility.Hidden; result.Content = "Result"; aftertest t = new aftertest(); t.Show(); } } else { error.Visibility = Visibility.Visible; } }