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How do I avoid the Object reference not set error when ExecuteXmlReader has no records?

Posted on 2004-04-20
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Last Modified: 2008-03-10
If have a SQL Server 2000 stored procedure that returns xml using "for xml auto" and also returns a return value.  If I use ExecuteXmlReader, I get an "Object reference not set to an instance of an object" error when there are no records that meet the criteria in my stored procedure because no xml is returned.  Is there anyway to avoid this error?
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Question by:RODEhard
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chaniewskim earned 750 total points
ID: 10870981
I use a SqlDataReader and build an XML string using StringBuilder. With that method you can check if your query returned any data using reader.HasRows
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Expert Comment

by:FouadDaniels
ID: 10897930
Would not it be better to have your SP send 1 node with "Empty" node in it and test at the client if the XML contains anyth8ing other then an "Empty" node.
That way you know it has data and it will never fail. I would gues that would be much faster in your scenario.

Regards,
Fouad
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