This article explains the visual elements of the RadComboBox control.
Description of Elements
Could also be referred to as "box", "input", etc. This is where the search
text is typed.
Positioned next to the textbox, it is used to toggle the dropdown containing the combobox items.
Could also be referred to as "popup" or "dropdown". The combobox items
that match the filter criteria (or all items if there isn't a search string provided) are displayed in this list which appears upon
typing in the textbox or clicking/tapping the toggle button.
Could also be referred to as "item", "entry", "option", etc.. Represents a single data
item from the control's datasource. The value visible in the item comes from the field in the datasource, assigned as a
dataTextField. If this field is not assigned, the text value is the string representation of the object to which
the item is bound.