Source. On Data Source Changed(EventArgs) Method
Raises the DataSourceChanged event.
protected: virtual void OnDataSourceChanged(EventArgs ^ e);
protected virtual void OnDataSourceChanged (EventArgs e);
abstract member OnDataSourceChanged : EventArgs -> unit override this.OnDataSourceChanged : EventArgs -> unit
Protected Overridable Sub OnDataSourceChanged (e As EventArgs)
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnDataSourceChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.