Regex.Replace rufuses与换行符替换 [英] Regex.Replace rufuses to replace with newline

问题描述

您好我写了一个非常简单的C＃程序的命令行，而不是依赖使用的MS Word中搜索C＃正则表达式和替换。问题是，即使正则表达式识别\r和\\\
很好，当我尝试使用其中任一来替换字符串，它似乎与转义字符，而不是字符本身来取代它。

  [STAThread] 
静态无效的主要（字串[] args）
 {
串初始= Clipboard.GetText （）; 
 Console.Write（查找：）; 
串找到=到Console.ReadLine（）; 
 Console.Write（替换）; 
字符串替换=到Console.ReadLine（）; 
串最终= Regex.Replace（初始，查找，替换）; 
 Clipboard.SetText（最后一次）; 
} 
  

例如，从剪贴板中我输入的字符串将是伍德科克，美国 （在末尾回车换行）。这个模式将是@+ \r，它匹配的罚款，并替换字符串会@\r\\\
。这产生字符串Woodcock\r\\\
（这是字母R和n仅仅是明确的）。我在做什么错

编辑： Anirudh的回答解决我的问题部分，我相应更新的代码。但是，看来，当我输入\r\\\
它也逃脱不知何故，而的ReadLine如果我写字符串替换=\r\\\
它实际上取代了以回车换行的字符串。链接到新的问题： C＃的ReadLine逃脱回车/换行符 <？ / p>

解决方案

这是因为你使用逐字字符串即 @，这会逃脱\r\\\
把它们当作文字，而不是特殊字符！

替换字符串应该是\r\\\
不会 @\r\\\


要解决的另一个问题。

 输出= Regex.Replace（输入\\r？\\\ \
，\r\\\
）; 
  

Hi I wrote a very simple C# program to use the C# Regex from command line instead of relying on the MS Word search and replace. The problem is that even though the Regex recognizes \r and \n fine, when I try to replace the string with either of these, it seems to replace it with the escaped character instead of the character itself.

    [STAThread]
    static void Main(string[] args)
    {
        string initial = Clipboard.GetText();
        Console.Write("Find: ");
        string find = Console.ReadLine();
        Console.Write("Replace: ");
        string replace = Console.ReadLine();
        string final = Regex.Replace(initial, find, replace);
        Clipboard.SetText(final);
    }

For example, my input string from the clipboard would be "Woodcock, american" (with a carriage return-newline at the end). the pattern would be @",.+\r", which matches fine, and the replacement string would be @"\r\n". This produces the string "Woodcock\r\n" (which are the letters r and n just to be clear). What am I doing wrong?

edit: Anirudh's answer solved my problem partially and I updated the code accordingly. However, it seems that when I input "\r\n" to the ReadLine it also escapes somehow, whereas if I write string replace = "\r\n" it actually replaces the string with a carriage return-newline. Link to new question : C# ReadLine escapes carriage return/newline?

解决方案

This is because you are using verbatim string i.e @"" which would escape \r\n treating them as literals and not special characters!

The replacement string should be "\r\n" NOT @"\r\n"

To solve your other problem

  Output=Regex.Replace(input,"\\r?\\n","\r\n");

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