DataSource Controls :: DBNull Error Trying To Call Stored Proc?

Jan 7, 2011

I have a recordset in a gridview that comes from an outer joint that creates null values in the recordsetWhen I write to the database using stored proc defined in datasource I get dbnull error.I'm trying to process the onDeleting event in the code behind but don't know what to write or if that's the best wayI need to call a stored proc and if the last parameters value is null then the stored proc does one thing, if it's no null it does something else.However DBNull doesn't ssem to be working.

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This is the sproc

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[Code]....

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[Code]....

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[Code]....

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[Code]....

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try
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...
...
...
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[Code]....

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[Code]....

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[Code]....

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I spent about 60 minutes sifting through search engine listings trying to figure this out and couldn't find an answer, so I decided to make this post for others.

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[Code]....

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[Code]....

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Dim context As New SondageDataContext()
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'dates
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End If
context.SubmitChanges()

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UPDATE Student
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public bool male
{
get

[code]...

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