public JsonResult BindTown(string country)
        {
            List <SelectListItem> BindTowns = new List <SelectListItem>();

            switch (country)
            {
            case "Cameroun":
                BindTowns = SelectListMethod.GetListTownCameroon().ToList();
                break;

            case "Côte d'ivoire":
                BindTowns = SelectListMethod.GetListTownCoteIvoire().ToList();
                break;

            case "Gabon":
                BindTowns = SelectListMethod.GetListTownGabon().ToList();
                break;

            case "Sénégal":
                BindTowns = SelectListMethod.GetListTownSenegal().ToList();
                break;
            }


            return(Json(BindTowns, JsonRequestBehavior.AllowGet));;
        }