Datetime.ToString（）C＃无法正常工作

问题描述

从

我期望 2015年7月29日，但收到了 2015年7月29日 !!!为什么？

解决方案

看起来像您的 /library/system.globalization.cultureinfo.currentculture%28v=vs.110%29.aspx> CurrentCulture 是-，这就是 / 字符替换为它的原因。

的特殊含义是用当前的区域性或提供的区域性日期分隔符替换我。

您有几种选择，要么逃避用单引号（或逐字字符串中的 \ / ）或使用以 / 作为 DateSeparator ，例如。

  string s = DateTime.Now.ToString（ M'/'d'/'yyyy）; 
 string s = DateTime.Now.ToString（@ M\ / d\ / yyyy）; 
 string s = DateTime.Now.ToString（ M / d / yyyy，CultureInfo.InvariantCulture）; 
  

From msdn it seems like I can create my own format with Datetime.ToString() method by using M, m, d, y etc. But when I tried one it didn't worked as expected, snipped below is the issue.

I was expecting 7/29/2015 but received 7-29-2015 !!! why?

解决方案

Looks like your DateSeparator of your CurrentCulture is - and that's why / character replace itself to it.

"/" custom format specifier has a special meaning as replace me with current culture or supplied culture date separator.

You have a few options, you either escape it with single quotes (or \/ in a verbatim string literal) or use a culture that has / as a DateSeparator like InvariantCulture.

string s = DateTime.Now.ToString("M'/'d'/'yyyy");
string s = DateTime.Now.ToString(@"M\/d\/yyyy");
string s = DateTime.Now.ToString("M/d/yyyy", CultureInfo.InvariantCulture);

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