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, arg         


        

Answer 1

Don't forget to use [MethodImpl(MethodImplOptions.NoInlining)], else its possible that it isn't thread safe.

(Read that somewhere long ago, remembered it, googled and found http://blog.quantumbitdesigns.com/tag/events/ )