ms access not allow null in datetimepicker

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I use Three datetimepicker tool with optional. It means either use or not at user mind.At the time of data retrieve from database to show error "DBNULL not convert to string" . I could use vb.net with ms access

Posted 13-Oct-11 0:15am

ckulasekaran

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Prerak Patel 13-Oct-11 6:16am

Share some code.

RaviRanjanKr 13-Oct-11 6:55am

Please be more specific while asking question.we need more Information.

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OriginalGriff · Answer 1 · 2011-10-13T00:48:00

Have you set "Allow nulls" in the database field description?

BTW: Don't ever store dates as strings: use the DateTime datatype instead. That way you can do comparisons and / or math on them, and you do not have to worry about the various date formats used worldwide as the browser or OS will handle the conversion.