I'm doing a communication program with apis online and I'm using a header of type DateTime and I needed that date to be in type ISO 8601 how can I do that?
I'm using this to create the header:
var tempo = DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ssZ");
var httpWebRequest = (HttpWebRequest)WebRequest.Create("teste");
httpWebRequest.Headers.Add("Date"+ tempo);
The output is this:
Date2017-09-08T15: 25: 53Z
I wanted it to be this:
Date: 2017-09-08T15: 25: 53Z
DateTime.UtcNow.ToString("o");
or
DateTime.UtcNow.ToString("yyyy-MM-ddTHH\:mm\:ss.fffffffzzz");
Font .
This is how a text is represented in the specified format. A DateTime is not formatted, it's a date is ready, only texts are formatted. For the question, including the edition, what you want is a text with the representation and not the date itself which is a quantitative number.
Actually the question is chameleon, what you really want is not the date in ISO format but rather build the text correctly, like this:
httpWebRequest.Headers.Add($"Date: {DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ssZ")}");
See running on .NET Fiddle . And no Coding Ground . Also I placed GitHub for future reference .
Option 1:
DateTime.UtcNow.ToString("o");
Option 2:
DateTime.UtcNow.ToString("yyyy-MM-ddTHH\:mm\:ss.fffffffzzz");
Option 3 (with the specified format specified):
DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ssZ");
var tempo = DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ssZ");
var httpWebRequest = (HttpWebRequest)WebRequest.Create("teste");
httpWebRequest.Headers.Add("Date: "+ tempo);