StackOverflow(difference between String.Empty and string.Empty)，答案是没有，在中间语言(Intermediate Language, IL)层也没有。 string是System.String的别名(alias)。string.Empty倒是不需要import System.

""呢？"Use whatever you and your team find the most readable."是被赞最多的答案。

Other answers have suggested that a new string is created every time you use "". This is not true - due to string interning, it will be created either once per assembly or once per AppDomain (or possibly once for the whole process - not sure on that front). This difference is negligible - massively, massively insignificant.

String Interning is a method of storing only one copy of each distinct String Value, which must be immutable.

intern - 实习生。做动词：put someone in prison without charging them with a crime, for political reasons or during a war，关进监狱就改不了了。

https://zhuanlan.zhihu.com/p/145629853
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【 在 KEILLY (米饭) 的大作中提到: 】
: String这类风格，来自《CLR via C#》及其追随者。
: string才是微软以及编辑器的标准。
更新了，谢谢。
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