Remove extra whitespaces, but keep new lines using a regular expression in C# [duplicate]

Question

I am using this regular expression,

Regex.Replace(value.Trim(), @"\s+", " ");

To trim and minimize extra spaces into one space.
The problem is that it also removes new lines from the text.

How can I fix the regex so that it will keep the new lines?

Answer 1

I haven't managed to test it in C# yet, but the following works on http://www.regexr.com/:

Regex.Replace(value.Trim(), @"[^\S\r\n]+", " ");

Credit goes to Match whitespace but not newlines

The Regex works by matching the negated character class of not-whitespace or return / newlines.