public event EventHandler<EventArgs> MyEventToBeFired;  
public void FireEvent(Guid instanceId, string handler)    
{     
  // Note: this is being fired from a method with in the same class that defined the event (i.e. "this").      
  EventArgs e = new EventArgs(instanceId);  
  MulticastDelegate eventDelagate = (MulticastDelegate)this 
   .GetType()  
   .GetField(handler, BindingFlags.Instance | BindingFlags.NonPublic)
   .GetValue(this);  
  Delegate[] delegates = eventDelagate.GetInvocationList();  
  foreach (Delegate dlg in delegates)  
  {  
    dlg.Method.Invoke( dlg.Target, new object[] { this, e } );  
  }  
}  
FireEvent(new Guid(), "MyEventToBeFired");