//public ActionResult Index()
        //{
        //    return View();
        //}

        public JsonResult ListAll()
        {
            try
            {
                return(Json(provDB.ListAll(), JsonRequestBehavior.AllowGet));
            }
            catch (Exception ex)
            {
                return(Json(new { Message = ex.Message }, JsonRequestBehavior.AllowGet));
            }
        }