An AutoSearchEnum expression that indicates the kind of searching that control
performs when user types characters.
By default, the AutoSearch property is exStartWith. Use the
AutoSearch property to define a 'contains' incremental search. If the
AutoSearch property is exContains, the control searches for nodes that contain
the typed characters. Use the ExpandOnSearch
property to expand nodes automatically while user types characters to search
for a specific node. The Search property
searches programmatically for for a node.
