How to find out if string contains non-alpha numeric characters in C#/.NET 2.0?

Posted by matti on Stack Overflow See other posts from Stack Overflow or by matti
Published on 2010-06-17T12:42:11Z Indexed on 2010/06/17 12:53 UTC
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c#

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regex

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strings

Allowed characters are (at least) A-Z, a-z, 0-9, ö, Ö, ä, ä, å, Å and german, latvian, estonian (if any) special chars? Is there ready-made method or do i have to make blacklist (non-allowed chars) and regular expressions IsMatch? If no ready-made how to use blacklist?

Cheers & BR -Matti

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