private void RetourneListeDesLibelleTop() { CaisseServiceClient service = new CaisseServiceClient(Utility.ProtocoleFacturation(), Utility.EndPoint("Caisse")); service.RetourneTousLibelleTopCompleted += (s, args) => { if (args != null && args.Cancelled) { return; } SessionObject.LstDesLibelleTop = args.Result; }; service.RetourneTousLibelleTopAsync(); service.CloseAsync(); }