InvariantCulture中使用的DateTime格式

Question

我必须在Javascript中预先验证一个字符串,该字符串将是c#中的DateTime.DateTime解析使用InvariantCulture.

有谁知道为InvariantCulture定义的DateTime格式？

Answer 1

从这里编译信息:https://docs.microsoft.com/en-us/dotnet/standard/base-types/standard-date-and-time-format-strings

• 短日期格式("d"): MM/dd/yyyy
• 长日期模式("D"): dddd, dd MMMM yyyy
• 全日短时间("f"): dddd, dd MMMM yyyy HH:mm
• 完整日期长时间("F"): dddd, dd MMMM yyyy HH:mm:ss
• 一般日期短时间("g"): MM/dd/yyyy HH:mm
• 一般日期长时间("G"): MM/dd/yyyy HH:mm:ss
• 月("M","m"): MMMM dd
• 往返("O","o"): yyyy-MM-ddTHH:mm:ss.fffffffK
• RFC1123("R","r"): ddd, dd MMM yyyy HH:mm:ss GMT
• 可排序("s"): yyyy-MM-ddTHH:mm:ss
• 短时间("t"): HH:mm
• 很长时间("T"): HH:mm:ss
• 通用可排序("你"): yyyy-MM-dd HH:mm:ssZ
• Universal Full("U"): dddd, dd MMMM yyyy HH:mm:ss
• 年月("Y","y"): yyyy MMMM

Answer 2

它很容易测试.

public static void Main()
{
    var d = DateTime.Now;

    Console.WriteLine("Date format (long):  {0}", d.ToString("D", CultureInfo.InvariantCulture));
    Console.WriteLine("Date format (short): {0}", d.ToString("d", CultureInfo.InvariantCulture));
    Console.WriteLine("Full format (long):  {0}", d.ToString("F", CultureInfo.InvariantCulture));
    Console.WriteLine("Full format (short): {0}", d.ToString("f", CultureInfo.InvariantCulture));
    Console.WriteLine("Time format (long):  {0}", d.ToString("T", CultureInfo.InvariantCulture));
    Console.WriteLine("Time format (short): {0}", d.ToString("t", CultureInfo.InvariantCulture));
    Console.WriteLine("General format (long):  {0}", d.ToString("G", CultureInfo.InvariantCulture));
    Console.WriteLine("General format (short): {0}", d.ToString("g", CultureInfo.InvariantCulture));
}

}

输出:

Date format (long):  Monday, 16 October 2017
Date format (short): 10/16/2017
Full format (long):  Monday, 16 October 2017 20:12:45
Full format (short): Monday, 16 October 2017 20:12
Time format (long):  20:12:45
Time format (short): 20:12
General format (long):  10/16/2017 20:12:45
General format (short): 10/16/2017 20:12

DotNetFiddle上的代码.

Answer 3

它或多或少与 en-us 相同，但使用 24 小时时间而不是 12 小时 am/pm 并填写完整的 MM/DD/YYYY。

var date1 = d.ToString(CultureInfo.InvariantCulture);   // "05/21/2014 22:09:28"
var date2 = d.ToString(new CultureInfo("en-US"));       // "5/21/2014 10:09:28 PM"