c# - Is calling an extension method on a "null" reference (i.e. event with no subscribers) evil?

Question

Evil or not evil?

public static void Raise(this EventHandler handler, object sender, EventArgs args)
{
   if (handler != null)
   {
      handler(sender, args);
   }
}

// Usage:
MyButtonClicked.Raise(this, EventArgs.Empty);

// This works too! Evil?
EventHandler handler = null;
handler.Raise(this, EVentArgs.Empty);

Note that due to the nature of extension methods, MyButtonClicked.Raise will not throw a NullReferenceException if MyButtonClicked is null. (E.g. there are no listeners to MyButtonClicked event).

Evil or not?

Answer 1

Not evil. I wish events worked this way by default. Can someone explain why an event with no subscribers is null?