public bool ResetPassword(ResetPasswordViewModel ressetPassVM)
        {
            User user = db.Users.FirstOrDefault(x => x.Email == ressetPassVM.Email && x.ResetPassword == ressetPassVM.ResetCode);
            if (user != null)
            {
                try
                {
                    var hash = Encoding.ASCII.GetBytes("san" + ressetPassVM.Password);
                    var sha1 = new SHA1CryptoServiceProvider();
                    byte[] sha1hash = sha1.ComputeHash(hash);
                    var hashedPassword = System.Text.Encoding.ASCII.GetString(sha1hash);

                    user.PassWord = hashedPassword;
                    db.SaveChanges();
                    return true;
                }
                catch (Exception e)
                {
                    return false;
                }
            }
            return false;
        }
 public ActionResult ResetPassword(ResetPasswordViewModel resetPassVM)
 {
     if (ModelState.IsValid)
     {
         ViewBag.Title = "Kết reset mật khẩu";
         if (bus.ChangePassword(resetPassVM))
         {
             ViewBag.Message = "Đổi khẩu thành công.";
             return View("Result");
         }
         else
         {
             ViewBag.Message = "Đổi mật khẩu thất bại.";
             return View("Result");
         }
     }
     return View(resetPassVM);
 }
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 public bool ChangePassword(ResetPasswordViewModel ressetPassVM)
 {
     return dal.ResetPassword(ressetPassVM);
 }