public ActionResult Create(Bloco bloco)
        {
            if (ModelState.IsValid)
            {
                db.Blocos.Add(bloco);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(bloco);
        }
        public ActionResult Edit(Bloco bloco)
        {
            if (ModelState.IsValid)
            {
                db.Entry(bloco).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(bloco);
        }