private static Racun CreateRacunDetail(DataRow row)
        {
            Racun r = new Racun();
            r.Komercijalist = row["FullName"].ToString();
            r.TipKreditneKartice = row["Tip"].ToString();

            return r;
        }
        private static Racun CreateRacun(DataRow row)
        {
            Racun r = new Racun();
            r.IDRacun = (int)row["IDRacun"];
            r.BrojRacuna = row["BrojRacuna"].ToString();

            return r;
        }