By default, the SingleSel property is True, which indicates that the selection supports a single item only. Use the SingleSel property to allow the user to select multiple values/items/rows. The SelectCount property counts the selected items in the control. Use the SelectedItem property to retrieve the handle of the selected item. Use the Value property to select a value in a single column control. The SelectableItem property specifies whether the user can select an item. Use the SelectItem or Select property to select an item. Use the SelectAll, UnselectAll method to select / unselect all items within the control (mostly when the SingleSel property is False).

The control's label displays the list of selected values (separated by comma) if:

• SingleSel property is False
• Style property is DropDownList
• SingleEdit property is True
• LabelColumnIndex or SearchColumnIndex property points to a valid column

The LabelText property specifies the HTML format to display the count of selected items (shown on the right side of the label  3  ), when control supports multiple-selection.