private void RetourneTypeTimbre()
        {
            CaisseServiceClient service = new  CaisseServiceClient(Utility.ProtocoleFacturation(), Utility.EndPoint("Caisse"));

            service.RetouneTypeTimbreCompleted += (s, args) =>
            {
                if (args != null && args.Cancelled)
                {
                    return;
                }
            };
            service.RetouneTypeTimbreAsync();
            service.CloseAsync();
        }
        private void RetourneTypeTimbre()
        {
            CaisseServiceClient service = new  CaisseServiceClient(Utility.ProtocoleFacturation(), Utility.EndPoint("Caisse"));

            service.RetouneTypeTimbreCompleted += (s, args) =>
            {
                if (args != null && args.Cancelled)
                {
                    return;
                }
                cbo_TypeTimbre.ItemsSource       = args.Result;
                cbo_TypeTimbre.DisplayMemberPath = "LIBELLE";
            };
            service.RetouneTypeTimbreAsync();
            service.CloseAsync();
        }