C#正则表达式-删除多余的空格，但保留新行 [英] C# Regex - Remove extra whitespaces but keep new lines

问题描述

我正在使用此正则表达式:

I am using this regex :

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

将多余的空间修剪成一个空间并将其最小化.
问题在于它还会从文本中删除新行.

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

如何修复正则表达式，以便保留新行?

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

推荐答案

在空白类中排除CRLF的[^\S\r\n]+. [^]是否定类. \S是一个否定类，等于不 [ space, tab, ff, lf, cr ]

Exclude CRLF's [^\S\r\n]+ within the whitespace class.
[^] is a negative class. \S is a negative class which equals not [ space, tab, ff, lf, cr ]

关于阴性类的事情是它被排除在组外，并且适用于每个成员
在组中分开.和数学一样，两个负数等于一个正数.

The thing about negative classes is it factored out of the group and applies to each member
in the group separately. And like math two negative equal a positive.

不是非空格= [^\S] = [\s]

Not Not whitespace = [^\S] = [\s]

但是，否定条件适用于下一个课目以及下一个课目

However, the negative condition applies to the next class item as well as the next ...

因此，既然已包含空格，则可以从类中排除特定的空格项.
[^\S\r\n]表示除CR或LF之外的所有空白.

So, now that whitespace is included, you can exclude particular whitespace items from the class.
[^\S\r\n] means all whitespace except CR or LF.

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