My goal is to find a file name ("MyFile.txt") inside a larger string. I.e.:
Some text before MyFile.txt some other text after
Currently I'm successfully using a Regular Expression with a character class of something like the following (simplified):
[\w\.\-]
This works fine, until the file contains other characters that are outside the \w group, e.g. an em dash: "My—File.txt".
My approach:
The method Path.GetInvalidPathChars returns an array of invalid characters. I've tried to use this method. Unfortunately, I found no way of "converting" this to be useful inside a Regular Expression.
I'm aware of
- The SO posting "How to remove illegal characters from path and filenames?"
- The concept of "Character class subtraction"
Still, I found no solution.
My question:
Is there any Regular Expression (or any other way) to find and extract a file name inside a larger string, based on the result of Path.GetInvalidPathChars?