public static DateTime Now(string timeZone)
{
var timeZoneInfo = TimeZoneKeeper.GetTimeZone(timeZone);
var result = TimeZoneInfo.ConvertTime(DateTime.UtcNow, timeZoneInfo);
return(result);
}
public static DateTime ConvertFromOffset(string dateTime, string destinationTimeZone)
{
if (!DateTimeOffset.TryParse(dateTime, out var parsed))
{
throw new ArgumentException($"Not a valid offset value: {dateTime}", nameof(dateTime));
}
var result = TimeZoneInfo.ConvertTime(parsed, TimeZoneKeeper.GetTimeZone(destinationTimeZone));
return(result.DateTime);
}
private static string ToClientFormat(DateTime dateTime, string format, string timeZone)
{
if (dateTime == DateTime.MinValue)
{
return(string.Empty);
}
var invariant = new DateTime(dateTime.Year, dateTime.Month, dateTime.Day,
dateTime.Hour, dateTime.Minute, dateTime.Second,
DateTimeKind.Utc);
var zone = TimeZoneKeeper.GetTimeZone(timeZone);
var offsetSpan = zone.GetUtcOffset(invariant);
var offset = new DateTimeOffset(invariant.Ticks, offsetSpan);
var result = offset.ToString(format);
return(result);
}