Converting to different timezone using UTC Offset in C#

Question

I need to convert to specific time zone from UTC time using UTC time Offset.

I tried as following:

 DateTime utcDateTime = DateTime.UtcNow;
 TimeSpan offSet = TimeSpan.Parse(timeoffset.ToString());
 DateTime newDateTime = utcDateTime.Add(offSet);

But it doesn't adds up the offset with UTC. Is there any other way?

Shiva Prasad · Accepted Answer · 2017-10-11 10:51:42Z

1

 DateTime utcDateTime = DateTime.UtcNow;
 TimeSpan offSet = TimeSpan.Parse(timeoffset.ToString());
 DateTime newDateTime = utcDateTime.Add(offSet);

instead of using TimeSpan.Parse(timeoffset.ToString()); i used TimeSpan.FromHours((double)offset);

  DateTime utcDateTime = DateTime.UtcNow;
     TimeSpan offSet = TimeSpan.FromHours((double)offset);
     DateTime newDateTime = utcDateTime.Add(offSet);

It worked perfectly fine for me.

Thank You

answered Oct 11, 2017 at 10:51

Shiva Prasad

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Comments

Hina Khuman · Accepted Answer · 2017-10-09 10:27:29Z

0

You can do in a simple way, here change time zone as per your requirement.

public static DateTime GetISTDate()
{
     DateTime utcDateTime = TimeZoneInfo.ConvertTimeToUtc(DateTime.Now, TimeZoneInfo.Local);
     var ISTtime = TimeZoneInfo.ConvertTimeFromUtc(utcDateTime, TimeZoneInfo.FindSystemTimeZoneById("India Standard Time"));
     return ISTtime;
}

edited Oct 9, 2017 at 10:27

answered Oct 9, 2017 at 10:24

Hina Khuman

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3 Comments

Shiva Prasad Over a year ago

i Cant use TimeZoneInfo.FindSystemTimeZoneById since i dont know the timezone id. AM storing UTCOffset time in DB and reading from there.

Hina Khuman Over a year ago

@ShivaPrasad: It seems like you are trying to get datetime on basic of off set.

Hina Khuman Over a year ago

@ShivaPrasad: Then you need to do in this way: utcDateTime + offSet;

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