src/IOL.Helpers/DateTimeHelpers.cs


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using System;

namespace IOL.Helpers
{
	public static class DateTimeHelpers
	{
		public static DateTime ToTimeZoneId(this DateTime value, string timeZoneId) {
			try {
				var cstZone = TimeZoneInfo.FindSystemTimeZoneById(timeZoneId);
				return TimeZoneInfo.ConvertTimeFromUtc(value, cstZone);
			} catch (TimeZoneNotFoundException) {
				Console.WriteLine("The registry does not define the " + timeZoneId + " zone.");
				return default;
			} catch (InvalidTimeZoneException) {
				Console.WriteLine("Registry data on the " + timeZoneId + " zone has been corrupted.");
				return default;
			}
		}

		public static DateTime ToOsloTimeZone(this DateTime value) => ToTimeZoneId(value, "Europe/Oslo");
	}
}