there must be a better way....

I need to write a datetime to an xml file in the UTC format:

"2008-04-12T14:43:11+00:00"

Obviously i can declare it in DateTime utc, but is there a simple way of making it a string in the above format without having to specify a whole load of arguments as in .tostring("YYYY"-"MM"-"DD" etcetcetcetc)