String path validation

Posted by CMAñora on Stack Overflow See other posts from Stack Overflow or by CMAñora
Published on 2012-10-18T04:58:23Z Indexed on 2012/10/18 5:00 UTC
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path

I have here a string(an input from the user) for a file path. I checked the string so that it will qualify the criteria:

check for invalid characters for a file path
will not accept absolute path (\Sample\text.txt)

I have tried catching the invalid characters in catch clause. It work except for '\'. It will accept 'C:\\Sample\text.txt' which is an invalid file path.

The following examples should be invalid paths:

:\text.txt
:text.txt
\:text.txt
\text.txt
C:\\\text.txt

I have been through similar questions posted here but none of them seemed to solve my issue.

What would be the best way to do such check?

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