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;
}