ApplicationBar.MainPage.button1Show_Checked C# (CSharp) Method

        private void button1Show_Checked(object sender, RoutedEventArgs e)
        {
            var checkBox = (CheckBox)sender;
            if (checkBox.IsChecked.Value)
                ApplicationBar.Buttons.Insert(0, button1);
            else
                ApplicationBar.Buttons.Remove(button1);
        }