/// <summary>
/// Make a timer only to show this windows for 8 seconds then it will be closed.
/// </summary>
public AboutViewModel()
{
_model = (_model != null) ? _model : new AboutModel();
_timer = (_timer != null) ? _timer : new DispatcherTimer();
_timer.Interval = new TimeSpan(0, 0, 1);
_timer.Start();
_timer.Tick += (s, e) =>
{
if (_model.SecondsToClose <= 1)
{
activeWindow.Close();
}
else
{
_model.SecondsToClose--;
}
};
}