C# Datetimes: Conversion for different time zones

user_650489 0
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I have a bunch of date times that I keep track of for my app. They are all in UTC time. For part of my app I want to send an email with one of these times, but edited to be in that specific time zone.

There are only two major areas that I will deal with, the east coast and Texas (Dallas and Huston)

I can also make a new datetime when I send out this email to get the eastern time zone (DateTime timestamp = DateTime.Now;)

My Question is this:

If the user is in the texas area how can I convert my time from eastern to that time (1 hour less)?

I tried something like this: 

            //Convert timestamp to local time
            TimeSpan ts = TimeZone.CurrentTimeZone.GetUtcOffset(timestamp);
            timestamp.Add(ts);

            timestampString = timestamp.ToString();

But that didn't work. I also know that this line is not valid:

timestamp.Hour = timestamp.Hour - 1;
time datetime c#
7 Answers
private string IST_DATE(DateTime date)
    {
        if (date != null)
        {
            return TimeZoneInfo.ConvertTimeFromUtc((DateTime)date, TimeZoneInfo.FindSystemTimeZoneById("India Standard Time")).ToString("yyyy-MM-dd");

        }
        return "";

    }
user_154220260
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