konvertere dataset til at returnere en int

Hvordan får jeg mit dataset til at returnere en int i stedet for et dataset?

System.Data.DataSet getModeid(int klientID)
    {
        string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0; Ole DB Services=-4; Data Source=D:\\Fam\\db1.mdb";
        System.Data.IDbConnection dbConnection = new System.Data.OleDb.OleDbConnection(connectionString);
       
        string queryString = "SELECT [Moede].[MoedeID] FROM [Moede] WHERE ([Moede].[klientID] = @klientID)";
        System.Data.IDbCommand dbCommand = new System.Data.OleDb.OleDbCommand();
        dbCommand.CommandText = queryString;
        dbCommand.Connection = dbConnection;
       
        System.Data.IDataParameter dbParam_klientID = new System.Data.OleDb.OleDbParameter();
        dbParam_klientID.ParameterName = "@klientID";
        dbParam_klientID.Value = klientID;
        dbParam_klientID.DbType = System.Data.DbType.Int32;
        dbCommand.Parameters.Add(dbParam_klientID);
       
        System.Data.IDbDataAdapter dataAdapter = new System.Data.OleDb.OleDbDataAdapter();
        dataAdapter.SelectCommand = dbCommand;
        System.Data.DataSet dataSet = new System.Data.DataSet();
        dataAdapter.Fill(dataSet);
       
        return dataSet;
    }