retrieve my object using WCF

Question

i work in silverlight project 
i have function that return an object 
haw can i retrive some attribute of this object in the main page 


 [OperationContract]

  public Employe ListerEmpById(int id)

       {

           using (var ec = new EntrepriseDataContext())

           {

               Employe req = (from p in ec.Employes

                             where p.Id==id

                             select p).SingleOrDefault();

               return req;

           }

       }