[英]Error, String not recognized as valid DateTime when trying to ParseExact time string
The following fails after executing the highlighted line. 执行突出显示的行后,以下操作失败。
String was not recognized as a valid DateTime.
字符串未被识别为有效的DateTime。
It's happening all the sudden, worked when it was 12PM or so... ? 它突然发生,在12点左右工作......? Now its 4:54PM and no go.
现在是下午4:54而且没有去。 What the heck is going on?
到底他妈发生了什么?
You should be using hh:mm:ss tt
as the format string - HH
is for the 24-hour clock, at which point you're saying it's 4AM... but with PM as the AM/PM signifier. 您应该使用
hh:mm:ss tt
作为格式字符串HH
用于24小时制,此时您说它是4AM ...但是PM作为AM / PM指示符。
Basically, use hh
with tt
, or HH
on its own. 基本上,使用
hh
与tt
或HH
本身。
Using Noda Time , you'd use: 使用Noda Time ,您将使用:
private static readonly LocalTimePattern TimePattern =
LocalTimePattern.CreateWithInvariantCulture("hh:mm:ss tt");
// TODO: Check this is what you want! We can't tell from your example.
private static readonly LocalDatePattern DatePattern =
LocalDatePattern.CreateWithInvariantCulture("dd/MM/yyyy");
private static readonly LocalDateTimePattern DateTimePattern =
LocalDatePattern.CreateWithInvariantCulture("yyyy-MM-dd HH:mm:ss");
public static string GetMergedDateTime(string dateText, string timeText)
{
// The Value property throws an exception if parsing failed. You can
// check that with the Success property first though.
LocalDate date = DatePattern.Parse(dateText).Value;
LocalTime time = TimePattern.Parse(timeText).Value;
LocalDateTime dateTime = date + time;
return DateTimePattern.Format(dateTime);
}
Note that it might be cleaner to return the LocalDateTime
- do as much of your work as possible in the "natural" representation, only using strings when you really have to. 请注意,返回
LocalDateTime
可能更干净 - 在“自然”表示中尽可能多地完成工作,只在必要时使用字符串。
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