method Items.UnselectAll ()
Unselects all items.

TypeDescription
Use the SelectAll, UnselectAll method to select / unselect all items within the control (mostly when the SingleSel property is False). 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. The RemoveSelection method removes the selected items (including the descendents).