public void chceckIfLastAdmin()
{
if (TypeOf == TypeOfUser.Employee)
{
throw new TravelAgency.Exeptions.UserException(TravelAgency.Exeptions.CreateUserError.CANNOT_CHECK_LAST_ADMIN);
}
else
{
UserDataSource dataSource = new UserDataSource();
if (dataSource.CheckIfLastAdmin())
{
throw new TravelAgency.Exeptions.DeleteException(TravelAgency.Exeptions.DeleteError.LAST_ADMIN_DELETE);
}
else if (this.ID == TravelAgency.Utils.SystemManager.Instance.CurrentUser.ID)
{
throw new TravelAgency.Exeptions.DeleteException(TravelAgency.Exeptions.DeleteError.YOUR_ACCOUNT_DELETE);
}
}
}