private void VerifierCampagneExiste(CsRegCli csRegCli, string periode) { Galatee.Silverlight.ServiceRecouvrement.RecouvrementServiceClient service = new Galatee.Silverlight.ServiceRecouvrement.RecouvrementServiceClient(Utility.ProtocoleFacturation(), Utility.EndPoint("Recouvrement")); service.VerifierCampagneExisteCompleted += (s, args) => { if (args != null && args.Cancelled) { return; } if (args.Result == null) { return; } FrmCampagne frm = new FrmCampagne(args.Result); frm.CallBack += frm_CallBack; frm.Closing += frm_Closing; frm.Show(); return; }; service.VerifierCampagneExisteAsync(csRegCli, periode); }