private void OnMessageSent(CallbackArgs response)
{
Dispatcher.BeginInvoke((Action)(() => { trace.Add(response); }));
}
protected void OnNotified(NotificationType notificationType, HttpWebResponse response, SendNotificationToMPNSCompleted callback)
{
CallbackArgs args = new CallbackArgs(notificationType, response);
if (null != callback)
callback(args);
}