C# DateTime.Parse 问题，System.Globalization.GregorianCalendar 不支持
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/2000343/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
DateTime.Parse issue, not support in System.Globalization.GregorianCalendar
提问by Alastair Pitts
I'm having an issue where a specific time string, contained in the Gmail Atom feed isn't parsing using DateTime.Parse(). I understand I could use DateTime.TryParse(), but I'm curious to why these two don't work, where as all of the rest do.
我遇到了一个问题，即 Gmail Atom 提要中包含的特定时间字符串未使用DateTime.Parse(). 我知道我可以使用 DateTime.TryParse()，但我很好奇为什么这两个不起作用，而其余的都不起作用。
2009-12-28T24:11:48Z
2009-12-30T24:16:20Z
the specific exception is:
具体的例外是：
System.FormatException: The DateTime represented by the string is not supported in calendar System.Globalization.GregorianCalendar.
System.FormatException：日历 System.Globalization.GregorianCalendar 不支持字符串表示的 DateTime。
My suspicion is that it's because of the hour 24... rather than 00, but I'm not sure how I would rectify that.
我怀疑是因为 24 小时......而不是 00，但我不确定我将如何纠正它。
采纳答案by Martin Brown
private static DateTime ParseDate(string s)
{
DateTime result;
if (!DateTime.TryParse(s, out result))
{
result = DateTime.ParseExact(s, "yyyy-MM-ddT24:mm:ssK", System.Globalization.CultureInfo.InvariantCulture);
result = result.AddDays(1);
}
return result;
}
回答by Oren Mazor
turns out google's using the w3c date and time standard: http://www.w3.org/TR/NOTE-datetime, which c# doesnt support? weird, but not that weird.
原来谷歌使用 w3c 日期和时间标准：http: //www.w3.org/TR/NOTE-datetime，哪个 c# 不支持？奇怪，但没那么奇怪。
this project appears to implement that for you.
这个项目似乎为你实现了。
http://www.codeproject.com/KB/cs/w3cdate.aspx
http://www.codeproject.com/KB/cs/w3cdate.aspx
edit: yes, I see now that google's not doing it right, but there's an exception for that in the w3cdate c# structure.
编辑：是的，我现在看到谷歌做得不对，但在 w3cdate c# 结构中有一个例外。
回答by Nathan Wheeler
If it IS just the 24instead of 00, you can simply replace it and add a day:
如果它只是24代替00，您可以简单地替换它并添加一天：
String s = "2009-12-28T24:11:48Z";
DateTime dt;
if (s.Contains("T24:")
{
s = s.Replace("T24:", "T00:");
if (DateTime.TryParse(s, out dt))
dt.AddDays(1);
}
else
{
DateTime.TryParse(s, out dt);
}
回答by James Bloomer
The DateTime entry in MSDNsays that it supports ISO 8601which allows both 24 and 00. It should allow the format of type [YYYY][MM][DD]T[hh][mm]Zeg. 2010-01-04T14:04Z.
MSDN 中的 DateTime 条目说它支持ISO 8601，它允许 24 和 00。它应该允许类型的格式，[YYYY][MM][DD]T[hh][mm]Z例如。2010-01-04T14:04Z.
Midnight is a special case and can be referred to as both "00:00" and "24:00". The notation "00:00" is used at the beginning of a calendar day and is the more frequently used. At the end of a day use "24:00". Note that "2007-04-05T24:00" is the same instant as "2007-04-06T00:00" (see Combined date and time representations below).
午夜是一种特殊情况，可以称为“00:00”和“24:00”。符号“00:00”用于日历日的开始，使用频率更高。在一天结束时使用“24:00”。请注意，“2007-04-05T24:00”与“2007-04-06T00:00”是同一时刻（请参阅下面的组合日期和时间表示）。
回答by Benjamin Podszun
Same idea as md5sum, but a different way:
与 md5sum 相同的想法，但方式不同：
DateTime.ParseExact(
"2009-12-28T24:11:48Z",
new []{ "yyyy-MM-ddTHH:mm:ssK", "yyyy-MM-ddT24:mm:ssK" },
System.Globalization.CultureInfo.InvariantCulture,
System.Globalization.DateTimeStyles.None
)
You'd still need to check if the date is correct though.
不过，您仍然需要检查日期是否正确。
