public Account CheckAccount(string email, string password)
        {
            Account result = _account.Where(k => k.Email == email && k.Password == password).FirstOrDefault();

            EventSystem.Instance.eventHanlder.GetEvent<AccountDataEvent>().Publish(result.AccountID);
            return result;
            
        }

        public SelectUserViewModel()
        {
            _repository = new UserRepository();
            SelectedUserCommand = new DelegateCommand(UserSelected);

            EventSystem.Instance.eventHanlder.GetEvent<AccountDataEvent>().Subscribe(accountData);

            Users = _repository.GetUser(AccountID);

        }

        private void accountData(int _accountid)
        {
            AccountID = _accountid;
        }
        private int accountID;
        public int AccountID
        {
            get { return accountID; }
            set { SetProperty(ref accountID, value); }
        }

        public LoginViewModel(IEventAggregator _eventAggregator, IRegionManager _manager, AccountRepository _repository)
        {

            manager = _manager;
            eventAggregator = _eventAggregator;
            repository = _repository;

            LoginCommand = new DelegateCommand(ExecuteLogin);
            
        }

        private void ExecuteLogin()
        {
            Account result = repository.AccountAuth(Email, Password);
            if (result != null)
            {
                manager.RequestNavigate("ShellRegion", "SelectUser");
                eventAggregator.GetEvent<AccountLoginEvent>().Publish(true);
                eventAggregator.GetEvent<AccountIDEvent>().Publish(result);
                Email = string.Empty;
                Password = string.Empty;
                Count = 0;
                Msg = "";
            }
            else
            {
                Count += 1;
                Msg = "Account konnte nicht gefunden werden." + " Versuch: " + Count;
                eventAggregator.GetEvent<AccountLoginEvent>().Publish(false);

            }
        }

       
        public SelectUserViewModel(IEventAggregator _eventAggregator, IRegionManager 
         _regionManager, UserRepository _userRepository)
        {
            eventAggregator = _eventAggregator;
            regionManager = _regionManager;
            userRepository = _userRepository;
            eventAggregator.GetEvent<AccountIDEvent>().Subscribe(accountData);
            Test = "Hallo from Select User";
        }

private void accountData(Account account)
        {
            if (account != null)
            {
                AllUser = userRepository.GetAllUser(account);
                //regionManager.RequestNavigate("ShellRegion", "Main");
                //eventAggregator.GetEvent<AccountLoginEvent>().Publish(true);

            }
            else
            {
            }
        }

        public List<User> GetAllUser(Account account)
        {
            var result = from s in testUsers
                         where s.AccountID ==  account
                         select s;
            return result.ToList();
        }