DateTime.ToString(“MM/dd/yyyy HH:mm:ss.fff") 导致类似“09/14/2013 07.20.31.371"的结果 [英] DateTime.ToString("MM/dd/yyyy HH:mm:ss.fff") resulted in something like "09/14/2013 07.20.31.371"

问题描述

我有一个 WP8 应用程序，它会将当前时间发送到网络服务.

I have a WP8 app, which will send the current time to a web service.

我通过调用

DateTime.ToString("MM/dd/yyyy HH:mm:ss.fff")

对于大多数用户来说，它工作得很好，并为我提供了正确的字符串，例如 "09/10/2013 04:04:31.415".但是对于某些用户，结果字符串类似于 "09/14/2013 07.20.31.371"，这会导致我的网络服务出现问题.

For most users it works great and gives me the correct string like "09/10/2013 04:04:31.415". But for some user the resulted string is something like "09/14/2013 07.20.31.371", which causes problem in my web service.

是不是因为某些文化格式问题?如何确保结果字符串由冒号而不是点分隔?

Is it because some culture format issue? How can I make sure the result string is delimited by colon instead of dot?

推荐答案

是不是因为文化格式问题?

Is it because some culture format issue?

是的.您的用户必须处于时间分隔符为点的文化中.两个:"和/"；在自定义日期和时间格式中以文化敏感的方式解释.

Yes. Your user must be in a culture where the time separator is a dot. Both ":" and "/" are interpreted in a culture-sensitive way in custom date and time formats.

如何确保结果字符串由冒号而不是点分隔?

How can I make sure the result string is delimited by colon instead of dot?

我建议指定CultureInfo.InvariantCulture:

string text = dateTime.ToString("MM/dd/yyyy HH:mm:ss.fff",
                                CultureInfo.InvariantCulture);

或者，您可以只引用时间和日期分隔符:

Alternatively, you could just quote the time and date separators:

string text = dateTime.ToString("MM'/'dd'/'yyyy HH':'mm':'ss.fff");

...但这会给你带来有趣的"如果您让用户在默认日历系统不是公历的文化中运行，您可能不会期望结果.以如下代码为例:

... but that will give you "interesting" results that you probably don't expect if you get users running in a culture where the default calendar system isn't the Gregorian calendar. For example, take the following code:

using System;
using System.Globalization;
using System.Threading;

class Test
{
    static void Main()        
    {
        DateTime now = DateTime.Now;
        CultureInfo culture = new CultureInfo("ar-SA"); // Saudi Arabia
        Thread.CurrentThread.CurrentCulture = culture;
        Console.WriteLine(now.ToString("yyyy-MM-ddTHH:mm:ss.fff"));
    }
} 

产生以下输出(2013 年 9 月 18 日):

That produces output (on September 18th 2013) of:

11/12/1434 15:04:31.750

我猜您的网络服务会对此感到惊讶！

My guess is that your web service would be surprised by that!

我实际上建议不仅使用不变区域性，而且也更改为 ISO-8601 日期格式:

I'd actually suggest not only using the invariant culture, but also changing to an ISO-8601 date format:

string text = dateTime.ToString("yyyy-MM-ddTHH:mm:ss.fff", CultureInfo.InvariantCulture);

这是一种更为全球接受的格式 - 它也是可排序的，并且使月和日的顺序显而易见.(而 06/07/2013 可以解释为 6 月 7 日或 7 月 6 日，具体取决于读者的文化.)

This is a more globally-accepted format - it's also sortable, and makes the month and day order obvious. (Whereas 06/07/2013 could be interpreted as June 7th or July 6th depending on the reader's culture.)

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