public ActionResult Excluir(IEnumerable <int> Ids)
 {
     if (Ids != null && Ids.Count() > 0)
     {
         List <Product> products =
             db.Product.Where(c => Ids.Contains(c.Id)).ToList();
         products.ForEach(c =>
         {
             db.Entry(c).State = EntityState.Deleted;
         });
         db.SaveChanges();
     }
     return(RedirectToAction("Index"));
 }