public BasinController()
 {//constructor methodta tanımlandı
     veritabani = new FuarDatabaseEntities();
     yonetim    = new YonetimController();
 }
 public KatilimciController()
 {
     veritabani = new FuarDatabaseEntities();
     yonetim    = new YonetimController();
 }
 public OrganizatorController()
 {
     yonetim    = new YonetimController();
     veritabani = new FuarDatabaseEntities();
 }