public Login()
{
InitializeComponent();
NotificationToAlarm = new GenericInteractionRequest<AlarmInfo>();
DataContext = new LoginViewModel();
PwdBox.KeyDown += (sender, e) => { if (e.Key == Key.Enter)logBtn_Click(null, null); };
}
/// <summary>
/// Default constructor.
/// </summary>
public PwdLostFoucus(LoginViewModel viewModel)
{
m_ViewModel = viewModel;
}