Add Handler for ButtonBase.Click AttachedEvent

Add Handler for ButtonBase.Click AttachedEvent

I Have a ComboBoxItem which i attempt to register to a Click event :
var cbItem =
(ComboBoxItem)cb.ItemContainerGenerator.ContainerFromItem(currentItem);
cbItem.AddHandler(ButtonBase.ClickEvent, new
RoutedEventHandler(cb.ItemClicked),true);
The Handler :
public void ItemClicked(object sender, RoutedEventArgs e)
{
var cbItem = (ComboBoxItem)sender;
............
}
This does not seem to have any effect when Clicking the Item .
1) How can i check what Handlers the ComboBoxItem references ? 2) In
general is there any thing wrong with the way i registered to that event ?
thanks .