C＃日期时间格式

Question

How to get date time in

2017-06-15T14:20:30+02:00

format from

DateTime.utc.now

It is an ISO 8601 date format. I tried with

DateTime.UtcNow.ToString(@"yyyy-MM-ddTHH\:mm\:ss") + DateTimeOffset.UtcNow.ToString(@"zzz");

But the date I am getting is

2017-10-20-T09:29:20+00:00

The application is hosted in Azure.

Answer 1

I think you are misunderstanding ISO8601. For UtcNow , the offset suffix will always be +00:00. The format shows local time, and the suffix means how much the local time is offset relatively to UTC time.

UtcNow is the current time in the UTC zone, not the local zone - ergo, its offset to UTC is 0.

Answer 2

DateTime.UtcNow.ToString(@"yyyy-MM-ddTHH:mm:ss") + DateTimeOffset.Now.Offset.ToString();

This is how this works:

EX 1:

DateTimeOffset localTime = DateTimeOffset.Now;
DateTimeOffset utcTime = DateTimeOffset.UtcNow;

Console.WriteLine("Local Time:          {0}", localTime.ToString("T"));
Console.WriteLine("Difference from UTC: {0}", localTime.Offset.ToString());
Console.WriteLine("UTC:                 {0}", utcTime.ToString("T"));
// If run on a particular date at 1:19 PM, the example produces
// the following output:
//    Local Time:          1:19:43 PM
//    Difference from UTC: -07:00:00
//    UTC:                 8:19:43 PM  

Ex 2:

var dt = new DateTime(2010, 1, 1, 1, 1, 1, DateTimeKind.Utc);
        string s = dt.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss \"GMT\"zzz");
        Console.WriteLine(s);

Answer 3

试试这个。

    DateTime.UtcNow.ToString(@"yyyy-MM-ddTHH\:mm\:sszzz")