public static void LogIn(int userId)
{
_user = new UserObj();
_user.ID = userId;
_loggedIn = true;
_threadKeepalive = new Thread(() => Keepalive());
_threadKeepalive.Name = "Keepalive Thread (Keepalive method)";
_threadKeepalive.Start();
}
public static void LogOut()
{
_loggedIn = false;
//_threadKeepalive.Abort();
_threadKeepalive.Join();
_user = null;
_contacts.Clear();
OnContactUpdate();
}