C# 将日期时间转换为英国格式
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Convert DateTime to UK format
提问by nick gowdy
I want to convert the date "01/22/2013 10:00:00" to "22/01/2013 10:00:00" and my method doesn't recognise my date string.
我想将日期“01/22/2013 10:00:00”转换为“22/01/2013 10:00:00”，但我的方法无法识别我的日期字符串。
DateTime dt = DateTime.ParseExact(StartDate, "MM dd yyyy h:mm", CultureInfo.InvariantCulture);
StartDate = dt.ToString("dd/M/yyyy");
dt = DateTime.ParseExact(EndDate, "MMM dd yyyy h:mm", CultureInfo.InvariantCulture);
EndDate = dt.ToString("dd/M/yyyy");
I am getting this error:
我收到此错误：
System.FormatException - String was not recognized as a valid DateTime.
System.FormatException - 字符串未被识别为有效的 DateTime。
What is the correct string format for ParseExact?
ParseExact 的正确字符串格式是什么？
回答by Lloyd
Your date formatting is wrong, for the US it would be 01/22/2013 10:00:00which is MM/dd/yyyy HH:mm:ss. For the UK it would be dd/MM/yyyyetc.
您的日期格式是错误的，对于美国来说，01/22/2013 10:00:00它是MM/dd/yyyy HH:mm:ss. 对于英国来说，它会是dd/MM/yyyy等。
DateTime dt = DateTime.ParseExact(StartDate, "MM/dd/yyyy HH:mm:ss", CultureInfo.InvariantCulture);
dt.ToString("dd/MM/yyyy");
Note I am assuming a 24 hour clock here which is why I use HH. If you wanted a twelve hour clock you'd need hhbut then you should also put AM/PM etc.
注意我在这里假设 24 小时制，这就是我使用HH. 如果你想要一个 12 小时制的时钟，你需要，hh但你也应该把 AM/PM 等。
回答by daryal
You are using slashes and you have "seconds" part in your date string. You need to change the format provided in the ParseExactmethod:
您正在使用斜杠，并且日期字符串中有“秒”部分。您需要更改ParseExact方法中提供的格式：
string StartDate = "01/22/2013 10:00:00";
DateTime dt = DateTime.ParseExact(StartDate, "MM/dd/yyyy HH:mm:ss", CultureInfo.InvariantCulture);
StartDate = dt.ToString("dd/M/yyyy");
回答by Mohammad Dehghan
Use this code:
使用此代码：
DateTime dt = DateTime.ParseExact(StartDate, "MM/dd/yyyy hh:mm:ss", CultureInfo.InvariantCulture);
StartDate = dt.ToString("dd/MM/yyyy hh:mm:ss");
Notice the change to format string of ParseExact.
请注意对格式字符串的更改ParseExact。
回答by Mehmet Ata?
Try this
尝试这个
var str = "01/22/2013 10:00:00";
var date = DateTime.ParseExact(str, "MM/dd/yyyy HH:mm:ss", new CultureInfo("en-GB"));
var res = date.ToString("dd/MM/yyyy HH:mm:ss", new CultureInfo("en-GB"));
Console.WriteLine(res);
Console.WriteLine("22/01/2013 10:00:00" == res);
