/// <summary>
/// Expansion Event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void grpAPILevel120_Expanded(object sender, RoutedEventArgs e)
{
// Init variables
Expander ex = ((Expander)sender);
string APIText = ((TextBlock)((StackPanel)ex.Header).Children[0]).Text;
// Filter sub list and set items source
umData.FilterSubList(APIText.Substring(APIText.LastIndexOf(' ') + 1));
((ItemsControl)ex.Content).ItemsSource = umData.Simulators2;
}
