c# datetime format iso8601 code example

Example 1: iso date format c#

var newTime = theTime.UtcNow.ToString("o");
// returns "2017-06-26T00:00:00.0000000Z"

var newTime2 = theTime.Date.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.sssZ");
// returns "2017-06-26T00:00:00.00Z"

Example 2: c# datetime iso 8601 format

var newTime = theTime.Date.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffZ");
// returns "2017-06-26T00:00:00.000Z"