Determines whether the controls that are contained in a System.Web.UI.WebControls.ButtonField object support callbacks.
The ButtonField.ValidateSupportsCallback method is a helper method that is used to determine whether the controls that are contained in a System.Web.UI.WebControls.ButtonField object support callbacks. This method is implemented as an empty method (a method that does not contain any code) to indicate that callbacks are supported.
The ButtonField.ValidateSupportsCallback method is used primarily by control developers.