public ActionResult Create(ReducaoZ reducaoz)
        {
            if (ModelState.IsValid)
            {
                reducaoz.CPF = usuario.CPF;
                reducaoz.DataVenda = DateTime.Now;
                db.ReducoesZ.Add(reducaoz);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            ViewBag.CPF = new SelectList(db.Usuarios, "CPF", "Nome", reducaoz.CPF);
            ViewBag.CNPJ = new SelectList(db.Lojas, "CNPJ", "LojaNome", reducaoz.CNPJ);
            return View(reducaoz);
        }
 public ActionResult Edit(ReducaoZ reducaoz)
 {
     if (ModelState.IsValid)
     {
         db.Entry(reducaoz).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     ViewBag.CPF = new SelectList(db.Usuarios, "CPF", "Nome", reducaoz.CPF);
     ViewBag.CNPJ = new SelectList(db.Lojas, "CNPJ", "LojaNome", reducaoz.CNPJ);
     return View(reducaoz);
 }