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Asked: 2026-05-10T19:20:38+00:00

I’ve created a stored procedure similar to the one below (I’m using this cut

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I’ve created a stored procedure similar to the one below (I’m using this cut down version to try and figure our the problem). 

CREATE PROCEDURE bsp_testStoredProc AS BEGIN  CREATE TABLE #tmpFiles   (     AuthorName NVARCHAR(50),      PercentageHigh INT )   -- Insert data into temp table  SELECT AuthorName, PercentageHigh FROM #tmpFiles  ORDER BY PercentageHigh DESC  DROP TABLE #tmpFiles  RETURN 0 END

From my C# code in VS2008, I’m trying to use the Query component with the Use Existing Stored Procedure option to connect this up to a DataTable / DataGridView to display the results.

However, because I’m selecting from a temporary table, in the Query component properties Visual Studio does not display any columns being returned from the stored procedure. I assume that it has trouble determining the data types being used since the SP is not based on a real schema.

Connecting to different stored procedures that select from real tables do show the columns correctly.

Does anyone know away around this? Is there some sort of hint I can add somewhere to explicitly state what sort of data will be returned?

Thanks in advance.

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1 Answer

  1. For info, you might consider using a ‘table variable’ rather than a temporary table (i.e. @FOO rather than #FOO) – this might help a little, and it certainly helps a few tempdb issues.

    With temporary tables – no there is no way of explicitly declaring the SPs schema. I would perhaps suggest using a simplified version of the SP while you generate your wrapper classes – i.e. have it do a trivial SELECT of the correct shape.

    Alternatively, I would use LINQ to consume a UDF, which does have explicit schema.

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