How to use the ExecuteReaderAsync method from NReco DbDataAdapter

Question

I'm trying to convert some code that uses NReco.Data to async version of ExecuteReader (ExecuteReaderAsync) but the methods requires many parameters. Any ideas ?

https://www.nrecosite.com/doc/NReco.Data/html/M_NReco_Data_DbDataAdapter_SelectQuery_ExecuteReaderAsync__1.htm

This is the working code with no-async version of ExecuteReader is:

System.Data.DataSet ds = nreco_DbDataAdapter.Select(sql_query).ExecuteReader(
                        (rdr) =>
                        {
                            System.Data.DataSet ds = new System.Data.DataSet();
                            ds.Tables.Add(new NReco.Data.DataReaderResult(rdr).ToDataTable());
                            rdr.NextResult();
                            ds.Tables.Add(new NReco.Data.DataReaderResult(rdr).ToDataTable());
                            return ds;
                        }
                        );

Not sure what paremeters I need to pass

Answer 1

In fact usage of ExecuteReaderAsync is pretty the same as ExecuteReader and the only difference is that 'read' handler should be async -- something like that:

System.Data.DataSet ds = await nreco_DbDataAdapter.Select(sql_query).ExecuteReaderAsync(
    async (rdr, cancel) => {
        System.Data.DataSet ds = new System.Data.DataSet();
        ds.Tables.Add(await (new NReco.Data.DataReaderResult(rdr)).ToDataTableAsync(cancel));
        rdr.NextResult();
        ds.Tables.Add(await (new NReco.Data.DataReaderResult(rdr)).ToDataTableAsync(cancel));
        return ds;
    }, cancellationToken
);

This code should be in async method. If you don't have 'cancellationToken' here you can specify CancellationToken.None.