Question

I’m trying to format some DateTime into this W3C DateTime format :-

Complete date plus hours and minutes:
eg. YYYY-MM-DDThh:mmTZD (eg 1997-07-16T19:20+01:00)

where:
 YYYY = four-digit year
 MM   = two-digit month (01=January, etc.)
 DD   = two-digit day of month (01 through 31)
 hh   = two digits of hour (00 through 23) (am/pm NOT allowed)
 mm   = two digits of minute (00 through 59)
 ss   = two digits of second (00 through 59)
 s    = one or more digits representing a decimal fraction of a second
 TZD  = time zone designator (Z or +hh:mm or -hh:mm)

I originally had this…

var myDateTime = someDateTime.ToString("s",
    System.Globalization.CultureInfo.InvariantCulture);

But that results in a string of :

2011-08-31T08:46:00

Can anyone help?

Answer 1

Use the following:

yourDateTime.ToString( "yyyy-MM-ddTHH:mmK", CultureInfo.InvariantCulture );

Here is more than you’ll ever want to know on DateTime formats:

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