after testing the above scenario with my class the result stanze is
i don't know why the id does not append into stanze
agsXMPP.protocol.client.Message acknowledgmentMessage = new agsXMPP.protocol.client.Message("bilal@192.168.0.151",
"hafeez@192.168.0.151");
acknowledgmentMessage.AddChild(new MessageRecieveNotification() { id ="123" });
XmppCon.Send(acknowledgmentMessage);