[Mono-dev] Possible issue in timzoneinfo class with mono

[Marek Safar]

Hello,

Could you please fill a bug report with steps how to reproduce it at
http://bugzilla.xamarin.com/

Thank you
Marek

On Thu, Jan 26, 2017 at 1:03 AM, nikhil sehgal <nikhil.jiet at gmail.com>
wrote:

> *Currently we have 2 issues while implementing TimeZoneInfo class in MONO.*
>
> 1.       While fetching the currenttimezone using “TimeZoneInfo.Local” we
> are getting the value of “DisplayName” and “ID” as *Local* in Linux,
> while it is giving correct values in Windows implementation.
>
>
> [image: Inline image 1]
>
>
> 1.
>
>
>
> TimeZoneInfo TZI_Local = TimeZoneInfo.Local;
>
>               string DisplayName = TZI_Local.DisplayName;
>
>               string Id = TZI_Local.Id;
>
> Console.WriteLine("Display Name : " + DisplayName);
>
>               Console.WriteLine("ID : " + Id);
>
>
>
> However when we fetch out all the TimeZone data we can have the value for
> “DisplayName” and “ID” in Linux but that too is different from that of
> Windows OS.
>
> System.Collections.ObjectModel.ReadOnlyCollection<TimeZoneInfo> tz;
>
>               tz = TimeZoneInfo.GetSystemTimeZones();
>
>               foreach (TimeZoneInfo timeZone in tz)
>
>               {
>
>                      string DisplayName = timeZone.DisplayName;
>
>                      string Id = timeZone.Id;
>
> Console.WriteLine("Display Name : " + DisplayName);
>
>                      Console.WriteLine("ID : " + Id);
>
> }
>
>
>
> *Output in Linux*
>
> DisplayName : Asia/Tehran
>
> ID : Asia/Tehran
>
>
>
>
>
> 2.       When we look into Adjustment Rules (TimeZoneInfo.AdjustmentRule)
> for the calculation of DSTDate and STDDate again this class returns *-1*
> for “Week” and “DayofWeek”. Also the other values e.g. “Day”, ”Hour”,
> ”Minute” and “Second” are not same in Linux and Windows.
>
>
>
> TimeZoneInfo TZI_Local = TimeZoneInfo.Local;
>
> TimeZoneInfo.AdjustmentRule[] ar = TZI_Local.GetAdjustmentRules();
>
> foreach (TimeZoneInfo.AdjustmentRule tzi_ar in ar)
>
> {
>
> Console.WriteLine("DaylightTransitionEnd.Day : " +
> tzi_ar.DaylightTransitionEnd.Day.ToString());
>
>               Console.WriteLine("DaylightTransitionEnd.DayOfWeek : " +
> tzi_ar.DaylightTransitionEnd.DayOfWeek.ToString());
>
>               Console.WriteLine("DaylightTransitionEnd.Month : " +
> tzi_ar.DaylightTransitionEnd.Month.ToString());
>
>               Console.WriteLine("DaylightTransitionEnd.Week : " +
> tzi_ar.DaylightTransitionEnd.Week.ToString());
>
> Console.WriteLine("DaylightTransitionEnd.TimeOfDay.Hour : " +
> tzi_ar.DaylightTransitionEnd.TimeOfDay.Hour.ToString());
>
> Console.WriteLine("DaylightTransitionEnd.TimeOfDay.Minute : " +
> tzi_ar.DaylightTransitionEnd.TimeOfDay.Minute.ToString());
>
>        Console.WriteLine("DaylightTransitionEnd.TimeOfDay.Second : " +
> tzi_ar.DaylightTransitionEnd.TimeOfDay.Second.ToString());
>
> }
>
> [image: Inline image 2]
>
> _______________________________________________
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> Mono-devel-list at lists.dot.net
> http://lists.dot.net/mailman/listinfo/mono-devel-list
>
>
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