How can I format DateTime to web UTC format?

Question

I have a DateTime which I want to format to \"2009-09-01T00:00:00.000Z\", but the following code gives me \"2009-09-01T00:00:00.000+01:00\" (both l

Answer 1

string.Format("{0:yyyy-MM-ddTHH:mm:ss.FFFZ}", DateTime.UtcNow)

returns 2017-02-10T08:12:39.483Z