C＃如何不规则的日期和时间字符串转换为日期时间？ [英] C# How to convert irregular date and time String into DateTime?

问题描述

我有一个程序，将不规则的日期和时间字符串转换为系统DateTime。

I have a program which converts a irregular date and time string into a system DateTime.

但是，由于系统无法识别不规则字符串，因此.ParseExact，toDateTime和TryParse方法无效。

However as the system does not recognize irregular strings, the method .ParseExact, toDateTime and TryParse has not worked.

程序需要转换的日期时间字符串只有两种类型：

There are only 2 types of date time strings that the program needs to convert:

 Thu Dec  9 05:12:42 2010
 Mon Dec 13 06:45:58 2010

请注意，双重间距，我使用.replace方法将单个日期转换为 Thu Dec 09 05:12:42 2010 。

Please note that the single date has a double spacing which I have used the .replace method to convert the single date to Thu Dec 09 05:12:42 2010.

有人可以请你提供代码吗？非常感谢！

May someone please advise on the codes? Thanks!

代码：

        String rb = re.Replace("  ", " 0");

        DateTime time = DateTime.ParseExact(rb, "ddd MMM dd hh:mm:ss yyyy", CultureInfo.CurrentCulture);

        Console.WriteLine(time.ToString("dddd, dd MMMM yyyy HH:mm:ss"));

推荐答案

我真的会避免regex，在.NET（ TryParseExact 方法和日期格式）：

I would really avoid regex and use what's already built-in .NET (TryParseExact method and date formats):

DateTime result;
string dateToParse = "Thu Dec  9 05:12:42 2010";
string format = "ddd MMM d HH:mm:ss yyyy";

if (DateTime.TryParseExact(
    dateToParse, 
    format,
    CultureInfo.InvariantCulture, 
    DateTimeStyles.AllowWhiteSpaces, 
    out result)
)
{
    // The date was successfully parsed => use the result here
}

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