private static void UseEvents()
{
var video = new Video()
{
Title = "video 1"
};
var videoEncoder = new VideoEncoder(); // publisher
var mailService = new MailService(); // subscriber
var messageService = new MessageService(); // subscriber
//registering a handler (OnVideoEncoded) for the event. 'mailService.OnVideoEncoded' is a reference or pointer to the method
videoEncoder.VideoEncoded += mailService.OnVideoEncoded;
videoEncoder.VideoEncoded += messageService.OnVideoEncoded;
videoEncoder.Encode(video);
//_____________NOTES_____________
//Events...
//...a mechanism for communication between objects
//...used in building Loosely Coupled Applications
//...helps extending applications
//Delegates...
//...agreement/contract between Publisher and Subscriber
//...determines the signature of the event handler method in Subscriber
}
static void Main(string[] args)
{
var video = new Video {
Title = "Titanic"
};
var videoEncoder = new VideoEncoder(); //Publisher
var mailService = new MailService(); //Subscriber
var messageService = new TextMessageServices(); //Subscriber
videoEncoder.VideoEncoded += mailService.OnVideoEncodedMail;
videoEncoder.VideoEncoded += messageService.OnVideoEncodedTextMessage;
videoEncoder.Encode(video);
Console.ReadKey();
}