Users can interact with items in the drop-down box, or with the C1DropDown control itself at run time. By default users can interact with controls placed within the drop-down box. For example, if you place a button or drop-down box within the C1DropDown control, it will be clickable by users at run time.

You can control the C1DropDown control's drop-down direction using the DropDownDirection property. You can see Drop-Down Box Direction for more information. You can choose if the C1DropDown box appears with the drop-down box automatically open using the IsDropDownOpen property. You can also set whether or not the drop-down box automatically closes when the users click outside of it – this can be set using the AutoClose property.