Caselessly比较字符串在C＃ [英] Caselessly comparing strings in C#

问题描述

让我们说我有两个字符串：a和b。比较是否并具有相同的值时忽略大小写，我一直使用：

Let's say I have two strings: a and b. To compare whether a and be have the same values when case is ignored, I've always used:

// (Assume a and b have been verified not to be null)

if (a.ToLower() == b.ToLower())

然而，使用反射，我已经在.NET Framework中看到了这几次：

However, using Reflector, I've seen this a few times in the .NET Framework:

// (arg three is ignoreCase)

if (string.Compare(a, b, true) == 0)

我测试速度更快，而 TOLOWER（）拍比较（）的字符串每次我用了。

I tested which is faster, and the ToLower() beat Compare() every time with the strings I used.

还有一个原因为什么比较（）而不是 TOLOWER（）？一些关于不同的的CultureInfo ？我抓我的头。

Is there a reason why to Compare() instead of ToLower()? Something about different CultureInfo? I'm scratching my head.

推荐答案

在 MSDN文章应该解释的东西。从本质上讲，其原因是在不同的文化设置的兼容性。

The Remarks section of the MSDN article should explain things. Essentially, the reason is for compatibility across different cultures settings.

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