string dsName, string connectionString, string commandText)

{

    IngresConnection connection =

        new IngresConnection(connectionString);

    IngresCommand command =

        new IngresCommand(commandText, connection);

    IngresDataAdapter adapter = new IngresDataAdapter(command);

    DataSet ds = new DataSet();

    adapter.Fill(ds, dsName);

    return ds;

}