how to get TimeZoneInfo short name

Question

Is there any method to get the 3 char code from System.TimeZoneInfo.Local ?

e.g. EDT instead of Eastern Daylight time etc.

Answer 1

You can write something like:

var abbr = System.TimeZoneInfo.Local.TimeZoneAbbr();

And the helper for it:

public static class ConvertionHelper
{
    public static String TimeZoneAbbr(this TimeZoneInfo zone)
    {
        var zoneName = zone.Id;/* zone.IsDaylightSavingTime(DateTime.UtcNow)
            ? zone.DaylightName
            : zone.StandardName;*/
        var zoneAbbr = zoneName.CapitalLetters();
        return zoneAbbr;
    }

    public static String CapitalLetters(this String str)
    {
        return str.Transform(c => Char.IsUpper(c)
            ? c.ToString(CultureInfo.InvariantCulture)
            : null);
    }

    private static String Transform(this String src, Func transformation)
    {
        if (String.IsNullOrWhiteSpace(src))
        {
            return src;
        }

        var result = src.Select(transformation)
            .Where(res => res != null)
            .ToList();

        return String.Join("", result);
    }
}