TUM.CMS.VplControl.Core.SelectionNode.searchTextBox_OnSearch C# (CSharp) Method

        private void searchTextBox_OnSearch(object sender, RoutedEventArgs e)
        {
            var searchArgs = e as SearchEventArgs;

            if (searchArgs == null) return;


            if (searchArgs.Keyword == "")
            {
                listBox.ItemsSource = typeList;
                listBox.SelectedIndex = -1;
            }
            else
            {
                listBox.ItemsSource = typeList
                    .Where(
                        x => x.Name.ToLower().Contains(searchArgs.Keyword.ToLower(), StringComparison.OrdinalIgnoreCase))
                    .ToList();
                listBox.SelectedIndex = 0;
            }
        }