DateTime.ParseExact给出String未被识别为有效的DateTime. [英] DateTime.ParseExact gives String was not recognized as a valid DateTime.

问题描述

我正在尝试将日期字符串解析为DateTime变量.我发现ParseExact是执行此操作的方法，但是尝试此操作时出现错误:

I'm trying to parse a date string into a DateTime variable. I've found out that ParseExact is the way to do it, but I try this I get the error:

字符串未被识别为有效的DateTime.

string timeFormat = "dd-MM-yyyy hh:mm:ss";
DateTime startDate = DateTime.ParseExact(reader["startdate"].ToString(), timeFormat, CultureInfo.InvariantCulture);
DateTime nextDate = DateTime.ParseExact(reader["nextdate"].ToString(), timeFormat, null);

我已经尝试过使用null(恰好在另一页上工作)和CultureInfo.InvariantCulture.

I've tried both with null (which happens to work on another page), and the CultureInfo.InvariantCulture.

reader["startdate"].ToString()输出:01-08-2012 15:39:09

reader["startdate"].ToString() output: 01-08-2012 15:39:09

和

reader["nextdate"].ToString()输出:01-08-2012 15:39:09

reader["nextdate"].ToString() output: 01-08-2012 15:39:09

我认为它应该工作，但是不行.

I think it should work, but it doesn't.

有人知道什么地方错了吗? :)

Somebody have an idea what is wrong? :)

推荐答案

您在格式字符串中使用hh.这是一个12个小时的一天中的一天"字段.值15不在范围内...

You're using hh in your format string. That's a 12-hour "hour of day" field. The value 15 isn't in range...

您要使用HH，它是24小时说明符.

You want HH instead, which is the 24-hour specifier.

有关更多信息，请参见 MSDN自定义日期和时间格式字符串文档信息.

See the MSDN custom date and time format strings documentation for more information.

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