如何更换在C＃中的字符串文字？ [英] How to replace text in string in C#?

问题描述

我有这个代码特定部分，但它不工作。

I have this particular piece of code, but its not working.

text = text.Replace("\xEF\xBF\xBD", "?");

还有没有人知道如何替换文本\xEF\ xBF\xBD到？在C＃字符串。

推荐答案

简答题（猜测了一下）：

text = text.Replace("\xFFFD", "?");

和了解的 Unicode的和字符编码的，尤其是的 UTF-8

And learn about Unicode and character encodings, especially utf-8.

龙答：

好了，你的意思是\xEF\xBF\xBD的字面？也就是说，由这些字符的字符串：

Well, do you mean "\xEF\xBF\xBD" literally? That is, a string consisting of these characters:

backslash, uppercase latin character E, uppercase latin character F, backslash, uppercase latin character B, uppercase latin character F, backslash, uppercase latin character B, uppercase latin character D

然后，答案应该是：

text = text.Replace(@"\xEF\xBF\xBD", "?");

还是你这是由C＃转义序列\xEF\xBF描述的字符序列\xBD，即：

Or do you sequences of characters which are described by the C# escape sequence "\xEF\xBF\xBD", namely:

LATIN SMALL LETTER I WITH DIAERESIS, INVERTED QUESTION MARK, VULGAR FRACTION ONE HALF

（这将显示为�）然后，你的代码是正确的：

(which would be displayed as "�)? Then, the your code would be correct:

text = text.Replace("\xEF\xBF\xBD", "?");

或你想要替换的字节序

EF BF BD

（这实际上可能是UTF-8 Unicode替换字符，FFFD，这往往显示为）的代表性？

(which could actually be the utf-8 representation of the unicode replacement character, FFFD, which is often displayed as"�")?

这只是胡乱猜测，而是凭直觉说你实际上。要实现后者现在，一个.net字符串中包含的字符，而不是字节，但假设你已经从一个文件为UTF-8，答案应该是阅读这些字节例如：

This is just a wild guess, but by intuition says you actually want to achieve the latter. Now, a .Net string contains characters, not bytes, but assuming that you have read these bytes e.g. from a file as utf-8, the answer would be:

text = text.Replace("\xFFFD", "?");

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