The items are displayed via a menu editor (in the tree mode).
This method returns false
The items are displayed via a combo box editor (in the list mode).
The control used to display a Single Choice Action in the list or tree mode depends on the SingleChoiceAction.ItemType property. To see how Single Choice Actions are displayed in different modes, see the Actions section in the Feature Center Demo, installed with XAF, or refer to the Feature Center demo online.