做DateTime。ToString(“s”)总是返回相同的格式吗?

MSDN on DateTime.ToString

在Reflector中,我在DateTimeFormatInfo中遇到了这种模式。

public string SortableDateTimePattern
{
      get
      {
            return "yyyy'-'MM'-'dd'T'HH':'mm':'ss";
      }
}

var dateTime = DateTime.Now;
var originialString = dateTime.ToString("s");
string testString;

foreach (var c in System.Globalization.CultureInfo.GetCultures(CultureTypes.AllCultures))
{
    Thread.CurrentThread.CurrentUICulture = c;
    if (c.IsNeutralCulture == false)
    {
        Thread.CurrentThread.CurrentCulture = c;
    }

    testString = dateTime.ToString("s");
    Console.WriteLine("{0} ", testString);
    if (originialString != testString)
    {
        throw new ApplicationException(string.Format("ToString(s) is returning something different for {0} " , c));
    }
}