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IsDefined
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Collins, Mike
Anyone out there that knows Coldfusion as well, I need the .net equivalent.
I'm trying to read from a
objDataReader4.Item("myName") and it says there's no data there. I think I
need to do an equivalent of IsDefined("") around it. Anyone know?

-Mike Collins

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Joel Mueller
If you're using VB, there's a built-in function called IsDBNull() that
may help you. It's also built into the DataReader object itself:

objDataReader4.IsDBNull(0)

This one only works with the column index (rather than the name) but it
probably performs marginally faster.

And of course, there's also System.Convert.IsDBNull()...

    - Joel

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Collins, Mike
Well, I tried that, but it didn't like it because there were no records to
read to see if it was null. What I ended up doing was creating an in
counter and looping of the recordset. If the counter equalled 0, it didn't
return results. It works, but there's got to be a better way.

-----Original Message-----
From: Joel Mueller [mailto:Click here to reveal e-mail address]
Sent: Friday, July 12, 2002 11:19 AM
To: aspngdata
Subject: [aspngdata] RE: IsDefined

If you're using VB, there's a built-in function called IsDBNull() that
may help you. It's also built into the DataReader object itself:

objDataReader4.IsDBNull(0)

This one only works with the column index (rather than the name) but it
probably performs marginally faster.

And of course, there's also System.Convert.IsDBNull()...

    - Joel

[Original message clipped]

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Nishat Syed
[Original message clipped]

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System.Convert




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