带有时区的时间戳格式 C#

Question

For the following code this will be the output (2020-06-05T23:02:24.554+05:30). I want the timezone without ":" in (+05:30) and expecting like (+0530). How to achieve this with datetime formatting? I can remove the colon with string operation but there should be some option in datetime format itself, Would be really good if someone suggest.

string date = String.Format("{0:s}.{0:fff}{0:zzz}", DateTime.Now);

Answer 1

There is no standard way of doing such, but you can write a customized method like with out testing that takes time and return utc as you asked for:

public static string GetUtc(DateTime dateTime)
{
    return $"{dateTime:zzz}".Replace(":", "");
}

And call it

GetUtc(DateTime.Now);

This will return you +0530.

Btw I refer also to Get timezone from DateTime for reading as well.

Answer 2

You could use DateTimeOffset instead of DateTime to get what you're after.

        var now = DateTimeOffset.Now;

        string date = string.Format("{0}{1}{2}", now.ToString("s.fff"), now.Offset.Ticks < 0 ? "-" : "+", now.Offset.ToString("hhmm"));