These VB functions are used to check for a null values or empty strings.

Read this article http://www.4guysfromrolla.com/webtech/tips/t040600-1.shtml
it has a great explanation of how to check for these.

Tony


"Nguyen Minh Tue" <tuenm@y...> wrote in message news:74497@p..._vb...
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> This question may sound simple.
> I already know the use of Nothing with Object.
> Then what  Empty and Null use for ?
> Thanks for reading.
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