When the System.Web.UI.WebControls.Menu control is bound to a data source, use the MenuItemBinding.ToolTipField property to specify the name of the field to bind to the MenuItem.ToolTip property of a System.Web.UI.WebControls.MenuItem object. When rendered, the MenuItem.ToolTip property of each menu item to which the System.Web.UI.WebControls.MenuItemBinding object is applied contains the corresponding value from the field. The specified text is displayed when the user positions the mouse pointer over a menu item.

If the data source contains multiple tables or attributes, you must first establish the binding criteria by setting the MenuItemBinding.Depth property, the MenuItemBinding.DataMember property, or both.

Instead of using this property to bind the MenuItem.ToolTip property of a System.Web.UI.WebControls.MenuItem object to a field, you can also bind it to a static value by setting the MenuItemBinding.ToolTip property. This allows you to display the same ToolTip for each menu item to which the System.Web.UI.WebControls.MenuItemBinding object is applied.