.Net events - blocking subscribers from subscribing on an event.

Question

Let's say I have a "Processor" interface exposing an event - OnProcess. Usually the implementors do processing thus I can safely subscribe on this event and be sure it will be fired. But one processor doesn't do processing - thus I want to prevent subscribers to subscibe on it. Can I do that? In other words in the code below I want the last line to throw an exception:

var emptyProcessor = new EmptyProcessor();
emptyProcessor.OnProcess += event_handler; // this line should throw an exception

Thanks in advance.

Answer 1

class EmptyProcessor {

    public override event EventHandler OnProcess { 
        add { throw new Exception(" :( "); }
        remove { }
    }
}