// GET: Classes
        public ActionResult Index()
        {
            BusinessLayer.BusinessManager _bm = BusinessLayer.BusinessManager.GetInstance();
            List <Classe> classes             = _bm.GetClasses();

            List <ClasseVM> classeVMS = new List <ClasseVM>();

            foreach (var classe in classes)
            {
                classeVMS.Add(new ClasseVM {
                    NomEtablissement = classe.NomEtablissement,
                    Niveau           = classe.Niveau,
                    ClasseId         = classe.ClasseId
                });
            }

            return(View(classeVMS));
        }