Question

I am attempting to subscribe two events to an object. But the object is not instantiated before I try to add the events. Is there a way I can subscribe these two events and instantiate afterwards? I already have the delegates, event, event args and event handler working.

Sample Code:

Ares a;

public B()
{
    a.up += new upEventHandler(doUp);
    a.down += new downEventHandler(doDown);
    a = new Ares();
}

Answer 1

I am attempting to subscribe two events to an object. But the object is not instantiated before I try to add the events. Is there a way I can subscribe these two events and instantiate afterwards?

No, absolutely not. It’s exactly like trying to set properties on an object before the object exists. Try to think about how that would work – and then realize that subscribed event handlers are part of the state of an object just like properties are.

Obviously you could store the event handlers somewhere else and subscribe them later on, but as stated, the answer is simply no. It doesn’t make any sense at a conceptual level, or a practical one.