System.Reflection.FieldInfo eventClick = typeof(Control).GetField("EventClick", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);
object obj = null;
if (eventClick != null)
{
    obj = eventClick.GetValue(null);
}                
System.Reflection.PropertyInfo eventsProp = typeof(Component).GetProperty("Events", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
if (eventsProp != null)
{
    EventHandlerList events = (EventHandlerList)eventsProp.GetValue(simpleButton2, null);                
    EventHandler click = (EventHandler)events[obj];
    if( click != null )
        click.Invoke(this, e);

}

EventHandlerList events = (EventHandlerList)eventsProp.GetValue(barButtonItem4, null);                

EventHandler click = (EventHandler)events[obj];

System.Reflection.FieldInfo eventClick = typeof(BarItem).GetField("itemClick", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);