date format yyyy-MM-ddTHH:mm:ssZ

Question

I assume this should be pretty simple, but could not get it :(. In this format Z is time zone.
T is long time pattern
How could I get a date in this format excep

Answer 1

Single Line code for this.

var temp   =  DateTime.UtcNow.ToString("yyyy-MM-ddTHH\\:mm\\:ssZ");