定义字符串中的4字节UTF-16字符 [英] Defining 4-byte UTF-16 character in a string

问题描述

我已阅读有关UTF的问题-8，UTF-16和UCS-2 ，几乎所有答案都给出了UCS-2已经过时且C＃使用UTF-16的语句。

I have read a question about UTF-8, UTF-16 and UCS-2 and almost all answers give the statement that UCS-2 is obsolete and C# uses UTF-16.

我所有尝试在C＃中创建4字节的字符U + 1D11E失败，所以我实际上认为C＃只使用UTF-16的UCS-2子集。

However, all my attempts to create the 4-byte character U+1D11E in C# failed, so I actually think C# uses the UCS-2 subset of UTF-16 only.

有我的尝试：

string s = "\u1D11E"; // gives the 2 character string "ᴑE", because \u1D11 is ᴑ
string s = (char) 0x1D11E; // won't compile because of an overflow
string s = Encoding.Unicode.GetString(new byte[] {0xD8, 0x34, 0xDD, 0x1E}); // gives 㓘ờ

C＃字符串真的是UTF-16还是他们实际上是UCS-2？如果他们是UTF-16，我该如何把小提琴谱列到我的C＃字符串？

Are C# strings really UTF-16 or are they actually UCS-2? If they are UTF-16, how would I get the violin clef into my C# string?

推荐答案

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Use capital U instead:

  string s = "\U0001D11E";

你忽略大多数机器是小端：

And you overlooked that most machines are little-endian:

  string t = Encoding.Unicode.GetString(new byte[] { 0x34, 0xD8, 0x1E, 0xDD });

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