Removing some characters from string using Regex

Question

I'm using the following regex:

documentText = Regex.Replace(documentText, "\\\\|\\^|\\+|\\*|~|#|=|\"", "");

and it works. But when I split this string by using:

wordsInText = documentText.ToLower().Split(' ').ToList();

I get elements that are marked as "" (empty string). I can remove it manually by iterating through collection and removing empty elements, but it must be a way to prevent this weird behaviour.

You mean, the original documentText didn't contain consecutive blanks but after replacing it does? Then just use the regex string "(\\\\|\\^|\\+|\\*|~|#|=|\") ?" instead — Bergi
– Bergi, Commented Oct 25, 2012 at 19:28
Independently of your question, I suggest that for your regex you use a verbatim string for readability: @"\\|\^|\+|\*|~|#|=|""" — Martin Ender
– Martin Ender, Commented Oct 25, 2012 at 19:29
Bergi, you're right. I tried to use your regex pattern but it still leaves blanks. — Rade Milovic
– Rade Milovic, Commented Oct 25, 2012 at 19:39

L.B · Accepted Answer · 2012-10-25 19:27:35Z

1

documentText.ToLower().Split(new char[]{' '},StringSplitOptions.RemoveEmptyEntries)

answered Oct 25, 2012 at 19:27

L.B

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3 Comments

Martin Ender Over a year ago

Just out of curiosity, why do you use a char array if it is only one delimiter character?

L.B Over a year ago

@m.buettner Because there is no overloaded method that takes a char and StringSplitOptions

Rade Milovic Over a year ago

Thanks L.B. This works, but is it possible to solve this issue inside regex.

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