private static void ExecuteEventExperiments()
{
PrintIntroText("Event");
EventPublisher publisher = new EventPublisher();
EventSubscriber subscriber = new EventSubscriber();
//EventHandler registrieren:
publisher.eventSent += subscriber.ReceiveEvent;
publisher.eventSent += subscriber.IEatEventsTwo;
//execute customly defined event:
publisher.Publish();
/** Event Api **/
publisher.ApiEvent += subscriber.ConsumeApiEvent;
//execute Api defined event:
publisher.PublishApiEvent();
/* Fazit
* [Customly Defined Event]
* 1) delegate definiert Signatur (Rückgabetyp, Parameterliste)
* 2) Eventhandler müssen die vom delegate vordefinierte Sig erfüllen.
* 3) EventHandler werden in der Main() o.ä. registriert (event += handlermethod)
* 4) ob ich "public void MyEvent(object sender, string argument)
* oder " ... My Event(object sender, StringEventArgs argObj)
* mache, ist mir überlassen. Zweiteres lässt einem mehr Werte übermitteln.
* 5) by using +=, you can register multiple EventHandlers (= methods)
*
* [Predefined Event API]
* 1) public event EventHandler<StringEventArgs> ApiEvent; belongs to
* the subscriber and implicitely defines the event signature (see 2) ).
* 1.b) It saves the 'public delegate void MyEventDefinitioin(...)' - line
* 2) The EventHandlingMethod must conform this signatur:
* - return: void
* - parameter list: (object sender, xyEventArgs args)
* Note, that sender won't deliver the fields from its
* children class - meaning the publisher.
* Possible work around: add the publisher instance to args.
* 3) Anything else just like @<[Customly Defined Event]
**/
PrintOutroText("Event");
}
