Gets the string assigned to the HotSpot.PostBackValue property of the System.Web.UI.WebControls.HotSpot object that was clicked.
Documentation for this section has not yet been entered.
Use this property to programmatically access the HotSpot.PostBackValue property of the System.Web.UI.WebControls.HotSpot object in an System.Web.UI.WebControls.ImageMap control that was clicked.