public ActionResult Register(usder acc)
 {
     if (ModelState.IsValid)
     {
         acc.MatKhau = encry.PasswordEncryption(acc.MatKhau);
         db.usders.Add(acc);
         db.SaveChanges();
         return(RedirectToAction("Login", "TaiKhoans"));
     }
     return(View(acc));
 }
        public ActionResult Login(usder acc)
        {
            if (ModelState.IsValid)
            {
                string encryptionpass = encry.PasswordEncryption(acc.MatKhau);
                var    model          = db.TaiKhoans.Where(m => m.TenDangNhap == acc.TenDangNhap && m.MatKhau == encryptionpass).ToList().Count();
                if (model == 1)
                {
                    FormsAuthentication.SetAuthCookie(acc.TenDangNhap, true);

                    return(View("Index", "ThongTinKhachHangs"));
                }
                else
                {
                    ModelState.AddModelError(" ", "Thông Tin Đăng Nhập Không Chính Xác");
                }
            }
            return(View(acc));
        }