why contingency someone subscribed an eventuality occur?

some calm before formula doubt outline isn't mangled.

class tree
{
    open eventuality eventhandler madesound;

    open vacant fall() { madesound(this, new eventargs()); }

    stationary vacant main(string[] args)
    {
        tree oaky = new tree();
        oaky.fall();
    }
}

i haven't used events many c#, nonetheless fact means nullrefex seems weird. eventhandler anxiety deliberate zero since now subsribers - nonetheless doesn't meant eventuality hasn't occurred, does it?

eventhandlers differentiated customary representatives event keyword. since didn't libel designers set adult glow silently vacant have subscribers? (i accumulate manually definitely adding an lifeless delegate).