Amoeba.Windows.OptionsWindow._keywordUpButton_Click C# (CSharp) Method

        private void _keywordUpButton_Click(object sender, RoutedEventArgs e)
        {
            var item = _keywordListView.SelectedItem as string;
            if (item == null) return;

            var selectIndex = _keywordListView.SelectedIndex;
            if (selectIndex == -1) return;

            _keywordCollection.Move(selectIndex, selectIndex - 1);

            _keywordListViewUpdate();
        }