StackOvewFlow_code_question

        private void HamburgerMenuListView1_SelChanged ( object sender, SelectionChangedEventArgs e )
        {
            if ( this.HamburgerMenuListView2.SelectedIndex >= 0 && this.HamburgerMenuListView2.FocusState == 0 )
                this.HamburgerMenuListView2.SelectedIndex = -1;
        }

        private void HamburgerMenuListView2_SelChanged ( object sender, SelectionChangedEventArgs e )
        {
            if ( this.HamburgerMenuListView1.SelectedIndex >= 0 && this.HamburgerMenuListView1.FocusState == 0 )
                this.HamburgerMenuListView1.SelectedIndex = -1;
        }