Subscribing to an Event Like delegates, events come ready-made with a += operator.. You subscribe to an event by using this += operator.. In the automated factory, the software controlli
Trang 1Subscribing to an Event
Like delegates, events come ready-made with a += operator You subscribe to an event
by using this += operator In the automated factory, the software controlling each
machine can arrange for the shutdown methods to be called when the
MachineOverheating event is raised like this:
TemperatureMonitor tempMonitor = new TemperatureMonitor();
tempMonitor.MachineOverheating += delegate { folder.StopFolding(0) };
tempMonitor.MachineOverheating += welder.FinishWelding;
tempMonitor.MachineOverheating += painter.PaintOff;
Notice that the syntax is the same as for adding a method to a delegate You can even subscribe by using an anonymous method When the tempMonitor.MachineOverheating event runs, it will call all the subscribing methods and shut the machines down