如何在C＃编码中确定字符串中字符的数量？ [英] How Do I Determine The Amount Of Characters In A String In C# coding?

问题描述

如何确定C＃中字符串中的字符数量？

没有特定的字符名称????

How do i determine the amount of characters in a string in C#?
given no specific character name????

推荐答案

查看：

字符串.Length Property [ ^ ]

C＃字符串长度属性 [< a href =http://www.dotnetperls.com/string-lengthtarget =_ blanktitle =新窗口> ^ ]

Check out:
String.Length Property[^]
C# String Length Property[^]

也很抱歉对一个非常简单的问题的高级答案，但是，为了完整起见，重要的是要提及。请查看我过去对其他问题的回答：如何检索char的unicode表示？ [ ^ ]。



除其他外，我解释一下，不幸的是， String.Length 并没有真正返回字符数。惊喜？它曾经让我感到惊讶。实际上，它返回16位代码字的数量。每个这样的单词仅代表具有BMP（代码点0xffff或更小）的字符的单个字符。另请参阅： https://en.wikipedia.org/wiki/Plane_%28Unicode%29#Basic_Multilingual_Plane [ ^ ]。



如果您的字符串的字符数大于MBP，则每个此类字符都由代理项对表示。我不想重复这一切;请阅读我过去的答案，了解详细信息和链接。此解决方案还应解释如何查找真实字符数。它还解释了代码点和角色的真正含义。

-SA

Sorry for too advanced answer to a very simple question, but, for completeness, it's important to mention. Please see my past answer to a different question: how to retrieve the unicode representation for a char?[^].

Among other things, I explain that, unfortunately, String.Length does not really return the number of characters. Surprise? It used to be surprise for me, too. In fact, it returns the number of 16-bit code words. Each such word represent a single character only for a character withing BMP (code point 0xffff or less). See also: https://en.wikipedia.org/wiki/Plane_%28Unicode%29#Basic_Multilingual_Plane[^].

If your string has characters above MBP, each such character is represented by a surrogate pair. I don't want to repeat all that; please read my past answer for detailed information and links. This solution should also explain how to find the "real" number of characters. It also explains what a code point and a character really is.

—SA

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