Exemplo n.º 1
0
        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
        }
Exemplo n.º 2
0
        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();
        }