Determining String Content

I need help with determing the content of a string, I need to know if it contains text or numbers. I know that there is probably some simple way to do this but my VB is a bit rusty.

Let's assume that you have a TextBox. To see if it holds number, you can use IsNumeric function.

Code:

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If IsNumeric(Text1) Then
    'It has numbers
Else
    'It has string
End If

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Thanks, that one's been bugging me for a while.