public IActionResult Create(RoleViewModels roleModel)
        {
            RoleContext roleContext = new RoleContext(connectionString);

            roleModel.Region = roles();

            IActionResult retour = null;

            if (ModelState.IsValid)
            {
                Role role = new Role();

                role.Identifiant = roleModel.Identifiant;
                role.Nom         = roleModel.Nom;



                bool isOK = roleContext.Insert(role);
                retour = RedirectToAction("Index");
            }
            else
            {
                retour = View(roleModel);
            }

            return(retour);
        }