.NET正则表达式中需要转义哪些字符？ [英] What characters need to be escaped in .NET Regex?

问题描述

$ c> 模式，需要转义哪些特殊字符以便逐字使用？

解决方案

不知道完整的字符集 - 但是我不会依赖知识，我不会把它编入代码。相反，我将使用 Regex.Escape 每当我想要一些我不确定的文字文字：

  //实际上不这样做来检查遏制...这只是一个例子。 
 public bool RegexContains（string haystack，string needle）
 {
 Regex regex = new Regex（^。*+ Regex.Escape（needle）+。* $）; 
 return regex.IsMatch（haystack）; 
} 
  

In a .NET Regex pattern, what special characters need to be escaped in order to be used literally?

解决方案

I don't know the complete set of characters - but I wouldn't rely on the knowledge anyway, and I wouldn't put it into code. Instead, I would use Regex.Escape whenever I wanted some literal text that I wasn't sure about:

// Don't actually do this to check containment... it's just a little example.
public bool RegexContains(string haystack, string needle)
{
    Regex regex = new Regex("^.*" + Regex.Escape(needle) + ".*$");
    return regex.IsMatch(haystack);
}

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