private async void LoginBtn_Click(object sender, RoutedEventArgs e)
{
string username = txbUser.Text;
string password = pwbPassword.Password.ToString();
LoginResult user = await Controller.Instance.Login(username, password);
if (user.Result)
{
MenuWindow mwd = new MenuWindow();
mwd.Show();
this.Close();
}
else
{
iNotifierBox.Text = "Lỗi";
iNotifierBox.ShowDialog();
}
}