public ActionResult Create(Client model)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    viverbembd.Client.Add(model);
                    viverbembd.SaveChanges();
                    return RedirectToAction("Index");

                }
                return View();
            }
            catch (Exception ex)
            {
                return View();
            }
        }
        public ActionResult Edit(Client model)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    viverbembd.Entry(model).State = System.Data.Entity.EntityState.Modified;
                    viverbembd.SaveChanges();

                    return RedirectToAction("Index");
                }
                return View();
            }
            catch (Exception ex)
            {
                return View();
            }
        }
        public ActionResult Delete(Client model)
        {
            try
            {
                viverbembd.Entry(model).State = System.Data.Entity.EntityState.Deleted;
                viverbembd.SaveChanges();

                return RedirectToAction("Index");

            }
            catch (Exception ex)
            {
                return View();
            }
        }