Represents a method that will handle the TreeList.BeforeFocusNode event.
public delegate void BeforeFocusNodeEventHandler( object sender, BeforeFocusNodeEventArgs e );
Public Delegate Sub BeforeFocusNodeEventHandler( sender As Object, e As BeforeFocusNodeEventArgs )
The event sender (typically the TreeList control).
A BeforeFocusNodeEventArgs object that contains data related to the event.
When you create a BeforeFocusNodeEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate.