RadDropDownButton provides a menu-like interface opened from a button.
Each of the items of RadDropDownButton can be set to perform an action when it is clicked. In addition, the items can contain other items, allowing you to create any hierarchy that fits your needs of sub-items.
RadDropDownButton is visually indistinguishable from RadSplitButton, but there is an important programmatic distinction. On RadSplitButton the DefaultItem property indicates the item whose Click event should be triggered when the button is clicked. If you want a button that does something when clicked as well as when a selection is made from the menu, you should use a RadSplitButton instead of a RadDropDownButton.