private void RechercheCampane(string NumCamp) { Galatee.Silverlight.ServiceRecouvrement.RecouvrementServiceClient service = new Galatee.Silverlight.ServiceRecouvrement.RecouvrementServiceClient(Utility.ProtocoleFacturation(), Utility.EndPoint("Recouvrement")); service.RechercheCampaneCompleted += (s, args) => { if (args != null && args.Cancelled) { return; } if (args.Result == null) { Message.ShowInformation("L'opération ne c'est pas correctement effecaion ,veuillez la refaire ", "Recouvrement"); } dg_campagne.ItemsSource = args.Result; return; }; service.RechercheCampaneAsync(NumCamp); }