Making a asynchronous call from web service
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I have a list `rms.PositiveResponse`, and another list `rms.NegativeResponses`. The Lists contain a `RecruitID` and a `Timestamp`. I have over 10,000 records.

I am getting this data from a web service.

    RMSDataService.RMS rms = new RMSDataService.RMS();
    var negList = rms.NegativeResponse.Where(d => d.RLMSTimeStamp != null && d.RLMSTimeStamp > new DateTime(2012, 02, 22));
    var posList = rms.PositiveResponse.Where(d => d.RLMSTimeStamp != null && d.RLMSTimeStamp > new DateTime(2012, 02, 22));

I want to make a Asynchronous call from the web service, because a recruit ID can change from negative to positive list. How can I achieve that? I dont want to wait for I/O in between.