有什么区别，什么时候用什么？什么是风险，如果我总是用TOLOWER（），什么是如果我总是用ToLowerInvariant风险（）？

What's the difference and when to use what? What's the risk if I always use ToLower() and what's the risk if I always use ToLowerInvariant()?

推荐答案

根据当前的文化，TOLOWER可能会产生一种文化特定的小写字母，你是不是期待。如生产信息不点上我，而不是信息，从而哉了字符串比较。出于这个原因，ToLowerInvariant应使用于任何非特定语言数据。当你可能有，可能是他们的母语/字符集的用户输入，一般应使用TOLOWER唯一的一次。

Depending on the current culture, ToLower might produce a culture specific lowercase letter, that you aren't expecting. Such as producing ınfo without the dot on the i instead of info and thus mucking up string comparisons. For that reason, ToLowerInvariant should be used on any non-language-specific data. When you might have user input that might be in their native language/character-set, would generally be the only time you use ToLower.

有关此问题的一个例子来看看这个问题： C＃ - TOLOWER（）有时由字母QUOT去除斑点; I＆QUOT;

See this question for an example of this issue: C#- ToLower() is sometimes removing dot from the letter "I"