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);
 }