public int SelectMax(IOpstiDomenskiObjekat odo) { komanda.CommandText = $"Select max({odo.VratiKljucZaMax()}) from {odo.VratiImeTabele()}"; komanda.CommandType = System.Data.CommandType.Text; var res = komanda.ExecuteScalar(); if (res != DBNull.Value) { return(Convert.ToInt32(res) + 1); } else { return(11); } }