protected override void OnClosed(EventArgs e)
{
base.OnClosed(e);
//unregister messages
CasualMessenger.Instance.Messenger.Unregister(ViewModel);
CasualMessenger.Instance.Messenger.Unregister(this);
ViewModel = null;
}
protected override void OnClosed(EventArgs e)
{
ViewModel = null;
base.OnClosed(e);
}