The DataSourceControl.RaiseDataSourceChangedEvent(EventArgs) method notifies a data-bound control that the underlying data source or the data cached in memory has changed, and that the control should rebind and perform any necessary additional work. Typically, the DataSourceControl.RaiseDataSourceChangedEvent(EventArgs) method is called when a property of the data source control or a parameter value has changed.

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.