我认为第二个是“合适的”，但老实说，我不认为这有什么关系。编译器应该足够聪明，可以将其中任何一个编译为完全相同的字节码。我用“myself”。

The empty string is like empty set just a name that everybody uses to call "". Also in formal languages strings created from an alphabet that have zero length are called the empty string. Both set and string have a special symbol for it. Empty string: ε and empty set: ∅. If you want to talk about this zero length string you will call it the empty string so everybody knows exactly what you are referring to. Now in case you name it the empty string why not use string.Empty in code, its shows the intention is explicit. Downside is that it’s not a constant and therefore not available everywhere, like in attributes. (It's not a constant for some technical reasons, see the reference source.)

我个人更喜欢“”，除非有很好的理由去做更复杂的事情。

I strongly prefer String.Empty, aside from the other reasons to ensure you know what it is and that you have not accidentally removed the contents, but primarily for internationalization. If I see a string in quotes then I always have to wonder whether that is new code and it should be put into a string table. So every time code gets changed/reviewed you need to look for "something in quotes" and yes you can filter out the empty strings but I tell people it is good practice to never put strings in quotes unless you know it won't get localized.

字符串。空和字符串。空的是等价的。String是BCL类名;字符串是它的c#别名(或快捷方式，如果你愿意)。与Int32和int相同。更多示例请参见文档。

至于“”，我不太确定。

就我个人而言，我总是使用string.Empty。

字符串是System的同义词。字符串类型，它们是相同的。

值也是相同的:字符串。空==字符串。空== ""

我不会在代码中使用字符常量“”，而是字符串。空或字符串。空-更容易看到程序员的意思。

在字符串和字符串之间，我更喜欢小写字符串，因为我曾经使用Delphi很多年，Delphi风格是小写字符串。

所以，如果我是你的老板，你会写字符串。空