private void RetournCampagneByRegcli(ServiceRecouvrement.CsRegCli Regroupement, string periode) { Galatee.Silverlight.ServiceRecouvrement.RecouvrementServiceClient service = new Galatee.Silverlight.ServiceRecouvrement.RecouvrementServiceClient(Utility.ProtocoleFacturation(), Utility.EndPoint("Recouvrement")); service.RetournCampagneByRegcliCompleted += (s, args) => { if (args != null && args.Cancelled) { return; } if (args.Result == null) { return; } LstCampagneGc = args.Result; dg_campagne.ItemsSource = LstCampagneGc; return; }; service.RetournCampagneByRegcliAsync(Regroupement, periode); }