Gets or sets the text displayed for a softkey when the Image has a NavigateUrl property defined. The default value is an empty string. This API is obsolete. For information about how to develop ASP.NET mobile applications, see the www.asp.net/mobile Web site.
This property is used only for devices that support softkeys. If this property is empty, the Text property of the control is used. If the Text property is empty or its length is less than 9, the Text property is used for the softkey label.