public LogInViewModel()
 {
     LogInCommand   = new DelegateCommand(OnLogInCommand, CanExecuteCommand);
     CancelCommand  = new DelegateCommand(OnCancelCommand);
     AddUserCommand = new DelegateCommand(OnAddUserCommand, CanExecuteCommand);
     User           = new UserModel(null, null, null);
     ListeUsers     = UserFactory.AllUserEntitiesToUserModel(UserDAO.GetAllUser());
     _isLogged      = false;
 }