3

当日期字符串附加了星期几时,TryParse 失败:

DateTime d;
string dateString = "Tuesday May 1, 2012 9:00 AM";
return DateTime.TryParse(dateString, out d); // returns false

处理此问题的最佳方法是什么,以便我可以安全地确定它是一个日期,并将其转换为日期?

4

2 回答 2

5

您需要告诉 TryParseExact 要查找的格式:

DateTime d;
string dateString = "Tuesday May 1, 2012 9:00 AM";
return DateTime.TryParseExact(
   dateString,
   "dddd MMMM d, yyyy h:mm tt",
   System.Globalization.CultureInfo.CurrentCulture,
   System.Globalization.DateTimeStyles.None,
   out d
);
于 2012-05-01T00:56:03.943 回答
1

这应该可以解决问题:)

        // Parse date and time with custom specifier.
        string dateValue = "Tuesday May 1, 2012 9:00 AM";
        string pattern = "dddd MMMM d, yyyy h:mm tt";

        DateTime parsedDate;

        if (DateTime.TryParseExact(dateValue, pattern, null,
                               DateTimeStyles.None, out parsedDate))
            Console.WriteLine("Converted '{0}' to {1:d}.",
                              dateValue, parsedDate);
        else
            Console.WriteLine("Unable to convert '{0}' to a date and time.",
                              dateValue);

参考 http://msdn.microsoft.com/en-us/library/w2sa9yss.aspx http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx

于 2012-05-01T01:12:15.407 回答