What is the correct format to use for Date/Time in an XML file

Question

What format do I use for Date/Time when writing to an XML file using .NET? Do I simply use DateTime.ToString(), or do I have to use a specific format?

Answer 1

EDIT: This is bad advice. Use "o", as above. "s" does the wrong thing.

I always use this:

dateTime.ToUniversalTime().ToString("s");

This is correct if your schema looks like this:

Which would result in:

2002-05-30T09:00:00

You can get more information here: http://www.w3schools.com/xml/schema_dtypes_date.asp