Question

I am trying to use a SqlDataAdapter to fill a DataTable, which I use as a data source to a DataGrid. The query is fine, at least when I run it manually in SSMSE. When I do the fill operation, the table gets the right columns, but no rows. The most frustrating part of this is that the code is identical (with a different query) on a different page. I cannot post the query, but my initialization code looks like this:

SqlCommand areaDAC = new SqlCommand (areaQuery, connection);
areaDAC.Parameters.Add (new SqlParameter ("@param",
    System.Data.SqlDbType.NVarChar, 50));
m_areaDataAdapter = new SqlDataAdapter (areaDAC);

Then to use it:

m_areaDataAdapter.SelectCommand.Parameters["@param"].Value = "Filter Val";
DataTable table = new DataTable ();
m_areaDataAdapter.Fill (table);

At this point, table has the right number of columns and no rows. I know the parameters are being added correctly, I know that data exists for the given query.

Update (as provided by Nik in a comment):

SELECT * FROM 
   (SELECT 
       ROW_NUMBER() OVER(ORDER BY DateAndTime DESC) AS rowNum, 
       areaName, stationName, lineName, DateAndTime, 
       Element, Description 
    FROM 
       sdrReportArea, sdrReportStation, sdrReportTLine, 
       SDRSequenceEvents, SDRSequenceStates 
    WHERE 
       sdrReportArea.areaID = sdrReportStation.stationID 
       AND sdrReportStation.stationID = sdrReportTLine.stationID 
       AND sdrReportTLine.lineID = SDRSequenceEvents.LineID 
       AND SDRSequenceEvents.StateID = SDRSequenceStates.StateID 
       AND DateAndTime >= @startDate AND DateAndTime <= @endDate 
       AND areaName = @area) AS TempTbl 
WHERE 
    rowNum BETWEEN @startRow AND @endRow;

Answer 1

1. Try removing the date type parameter in where clause and test again.
2. And I faced such problem With typed dataset where “Over” not work(IMO), so I guess it will not work here too. Use SPs instead if possible.