CODEWITHSUNDEEP
c#regex
user2619395
user2619395

Reputation: 249

Correcting path separator with Regex or Other Methods

I am trying to check to see if a path has more than two \'s and replace them with two \'s.

For example if the path I have looks like:

C:\\documents\\\\temporary

replace the \\\\ with \\ so the result would be:

C:\\documents\\temporary

At the moment what I am using in C# (which doesn't work) is this:

strVersion = Regex.Replace(strVersion, @"\\\\{4}", "\\\\");

Edit: This is fixed now I used Daniel Gimenez's solution.

Upvotes: 2

Views: 432

Answers (3)

Luke Willis
Luke Willis

Reputation: 8580

Daniel's answer is correct, but to add to it:

If you are not expecting escaped strings, it would make sense to also replace single instances of backslashes with two.

strVersion = Regex.Replace(strVersion, @"\\+", @"\\");

Upvotes: 0

Daniel Gimenez
Daniel Gimenez

Reputation: 20504

Use the regex \\{2,} to replace instaces of 2 or more slashes. {n,} means the pattern can occur any number of times from n to infinity.

strVersion = Regex.Replace(strVersion, @"\\{2,}", "\\");

REY

Now I'm not sure if you just want one slash back or two. If you want two back change it to:

strVersion = Regex.Replace(strVersion, @"\\{2,}", @"\\");

Upvotes: 4

IllusiveBrian
IllusiveBrian

Reputation: 3214

In your initial code, my guess would be that 

strVersion = Regex.Replace(strVersion, @"\\{4}", "\\");

Replaces with '\' rather than "\\". Perhaps try @"\\" or "\\\\"? (It's a bit annoying that the stackoverflow text editor actually treats the \ like a string would, so in my solution I actually had to type out 4 \'s for the first and 8 for the second)

Upvotes: -1

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