/// <summary>
/// Convert IANA timezone to a UTC offset.
/// </summary>
/// <param name="IanaTimezone">eg "America/Vancouver"</param>
/// <returns>The offset eg -7</returns>
public static Int16 GetUtcOffset(String IanaTimezone)
{
Int16 utcOffset = 0;
try {
NodaTime.IDateTimeZoneProvider tzProvider = NodaTime.DateTimeZoneProviders.Tzdb;
if (!tzProvider.Ids.Contains(IanaTimezone))
{
log.Warn("Could not map IANA timezone '" + IanaTimezone + "' to UTC offset.");
}
else
{
NodaTime.DateTimeZone tz = tzProvider[IanaTimezone];
NodaTime.Offset offset = tz.GetUtcOffset(new NodaTime.Instant());
utcOffset = Convert.ToInt16(offset.Seconds / 3600);
}
} catch (System.Exception ex) {
OGCSexception.Analyse("Not able to convert IANA timezone '" + IanaTimezone + "' to UTC offset.", ex);
}
return(utcOffset);
}