private void button_Click(object sender, RoutedEventArgs e)
        {
            userModel user = new userModel();

            user.IdUser   = ConfigurationManager.AppSettings["userid"];
            user.Password = passfield.Password;

            result = userDAO.update(user);
            if (result > 0)
            {
                MessageBox.Show("Ubah password berhasil!");
            }
            else
            {
                MessageBox.Show("Ubah password gagal!");
            }
        }