Box. On Selected Index Changed(EventArgs) Method
Raises the SelectedIndexChanged event.
protected: override void OnSelectedIndexChanged(EventArgs ^ e);
protected override void OnSelectedIndexChanged (EventArgs e);
override this.OnSelectedIndexChanged : EventArgs -> unit
Protected Overrides Sub OnSelectedIndexChanged (e As EventArgs)
This event is raised when you select a new item from the list or when you set the SelectedIndex property.
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnSelectedIndexChanged 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.