publicdomain Forum Rss Feed

New Post: warning CS1734: XML comment

orellabac — Sat, 18 Dec 2010 21:45:01 GMT

There just some methods that have xml comment errors. How can I modify the online code to fix those errors?

New Post: Changed location for external link

BruceClement — Tue, 15 Jun 2010 01:26:19 GMT

The referenced codeproject article "How to Use the Olson Time Zone Database in .NET" is now at http://www.codeproject.com/KB/dotnet/Using_time_zones_in_NET.aspx

It looks like they've restructured their site.

New Post: DST offset wrong for southern hemisphere

MARIOIGREC — Thu, 10 Sep 2009 15:23:01 GMT

A while back I reported an issue with DST for southern hemisphere locations. Originally, in version 0.2.30.0, DST start and end dates were reversed. For example, today on Sep 10, 2009, Canberra, Melbourne, Sydney location, which normally has GTM +10:00 would return:

- DST: On (incorrect)
- DST Offset: +01:00 (incorrect)
- DST Starts: 2009-04-05 03:00 (incorrect)
- DST Ends: 2009-10-04 02:00 (incorrect)
- Time Zone Offset from GMT: +10:00 (correct)

The fix, which is the most recent version (0.2.47.0), looks like this:

- DST: Off (correct)
- DST Offset: 00:00 (correct)
- DST Starts: 2009-10-04 02:00 (correct)
- DST Ends: 2009-04-05 03:00 (correct)
- Time Zone Offset from GMT: +11:00 hours (incorrect)

From what I see, this affects all southern hemisphere time zones with DST (fortunately there aren't that many). You may want to be aware of this and correct the wrong values in your code.

Here are PublicDomain.TzTimeZone methods that demonstrate how I get each of the above values. I took these out of my Time Zone test page where I have a lot of additional code, so I haven't tested these raw calls. You may have to replace now with a datetime variable which you explicitly set to local or UTC with DateTime.SpecifyKind(dtVariable, DateTimeKind.Local).

Dim zone As PublicDomain.TzTimeZone
Dim sZone as string
sZone = "Australia/Melbourne"
'sZone = "America/Sao_Paulo"
zone = PublicDomain.TzTimeZone.GetTimeZone(sZone)
'Time Zone Offset from GMT: zone.GetUtcOffset(now)
'DST: zone.IsDaylightSavingTime(now)
'DST Offset: zone.GetDaylightChanges(now.year).Delta.Hours.ToString & ":" & zone.GetDaylightChanges(2009).Delta.Minutes.ToString
'DST Starts: zone.GetDaylightChanges(now.year).Start
'DST Ends: zone.GetDaylightChanges(now.year).End

New Post: Bangladesh / Dhaka switching to DST +07:00 on June 20, 2009

alanbirenbaum — Thu, 04 Jun 2009 11:05:30 GMT

Does anyone have a patch for this new Rule?

New Post: Time zone update tools, project

schizoidboy — Sat, 18 Apr 2009 21:51:43 GMT

Hi, sorry but this project is no longer under active development. The effort was part of a for-profit venture which is in hibernation. The source code is available and there were also some patches people had made to get it working as attachments in the bugs, although I never tested them myself and never fixed/added assertions to fix the bugs.
There is also this alternative:
http://www.codeproject.com/KB/locale/zoneinfo_dotnet_api.aspx
I have been out of the space for some time so I'm not aware if there are other alternatives. I don't see anything new @ http://www.twinsun.com/tz/tz-link.htm
Good luck! Let us know how you solve your problems...
Regards

New Post: Time zone update tools, project

bbell2000 — Wed, 15 Apr 2009 00:21:36 GMT

I'm curious about whether this project is being maintained and what the current status is wrt bugs. I'm desperately looking for the time zone functionality that's missing from .NET 2, but had a bit of trouble with the instructions outlined above (the assertions in TzTimeZoneTests.Bug13252a aren't right and couldn't have possibly been verified).

New Post: Fix Documentation

schizoidboy — Tue, 03 Feb 2009 06:35:43 GMT

Hi ingig, this is a security feature in Windows. After you download the CHM file, right click -> Properties, and then click "Unblock" at the bottom. You can also change your Internet Options security policy.
I'll have to investigate adding an index. I use http://inchl.nl/SandcastleGUI/ for generating the CHM.
Thanks,

New Post: Fix Documentation

ingig — Tue, 27 Jan 2009 13:50:43 GMT

Any chance that the documentation can be fixed? I get "The address is not valid" when I browse through the classes. Also is it possible to add Index to it?

New Post: Known Issues and Bugs?

schizoidboy — Sun, 30 Nov 2008 11:05:11 GMT

Hi Chris, Unfortunately, I've had almost no free time to work on those bugs, so they are still open. The Issue Tracker is pretty up-to-date.
Thanks,

New Post: Known Issues and Bugs?

chrispar — Wed, 26 Nov 2008 06:33:43 GMT

Hi Kevin,

May I know where can I find all the known issues and bugs of the current release (0.2.47.0)?

As I browse through the discussion section, it didnt mention whether the bugs are solved. especially GetAbbreviation, GetUtcOffSet and DST.

Appreciate your reply.

Thanks
Chris Par

New Post: Newbie question

schizoidboy — Thu, 13 Nov 2008 23:25:44 GMT

Hi, sorry, this is only supported with .NET, not with older VB6.
Thanks,

New Post: Newbie question

kepler — Mon, 10 Nov 2008 19:29:43 GMT

Hi,

To use PublicDomain.dll in VB6, we must include the dll in our project directory. How do we reference it? I tryed manualy, and VB6 didn't accept it. I've runned regsvr32 and it didn't worked out.
Sorry for the question...

Kind regards,

Kepler

New Post: GetUtcOffset gives the wrong value

russlau — Wed, 05 Nov 2008 11:03:42 GMT

I'm testing GetUtcOffset either side of the daylight cut-over for Sydney, and I always get 11 hours:

            TzTimeZone tzZone = TzTimeZone.GetTimeZone("Australia/Sydney");
            double h1 = tzZone.GetUtcOffset(DateTime.Parse("1-Oct-2008 12:00")).TotalHours;
            double h2 = tzZone.GetUtcOffset(DateTime.Parse("31-Oct-2008 12:00")).TotalHours;

Testing "IsDaylightSavingTime" definitely gives me the results I expect:

            bool b1 = tzZone.IsDaylightSavingTime(DateTime.Parse("1-oct-2008 12:00")); // gives false
            bool b2 = tzZone.IsDaylightSavingTime(DateTime.Parse("31-oct-2008 12:00")); // gives true

New Post: How to convert the given time based on TimeZone?

russlau — Wed, 05 Nov 2008 10:58:57 GMT

This should do what you want:

            TzTimeZone perth = TzTimeZone.GetTimeZone("Australia/Perth");
            TzTimeZone adelaide = TzTimeZone.GetTimeZone("Australia/Adelaide");
            DateTime utc = perth.ToUniversalTime(DateTime.Parse("24-Sep-2008 12:00"));
            DateTime inAdelaide = adelaide.ToLocalTime(utc);
            Console.WriteLine(inAdelaide.ToLongTimeString());

There's more info on the CodeProject article: http://www.codeproject.com/KB/dotnet/Using_time_zones_in_NET.aspx

New Post: How to convert the given time based on TimeZone?

tallboy — Wed, 24 Sep 2008 04:22:51 GMT

Hi Guys,

I am using Olson TimeZone, and I would like to convert the give datetime based on the TimeZone.

For example:

TimeZone: Australia/Perth:
Given Time: Wednesday, September 24, 2008 12:00:00PM

Process... is to convert the Given Time based on the new TimeZone which is "Australia/Adelaide"

Result Should be:

TimeZone: Australia/Adelaide
Converted Time: Wednesday, September 24, 2008 1:00:00PM

I am having difficulty doing this process in PublicDomain. Can you share me some of your thougths on how to do this?

Thanks

New Post: How to assign value in Zone manually?

tallboy — Wed, 24 Sep 2008 02:57:52 GMT

Hi Guys,

Please disregard this question of mine, because I already got it by using the TzTimeZone.GetTimeZone("Australia/Perth");

New Post: How to assign value in Zone manually?

tallboy — Wed, 24 Sep 2008 02:18:05 GMT

Hi,

I am new to PublicDomain.dll and I would like to ask if is there any way to assign value to zone, manually?

I tried this code below but it gives an error: (CS0029: Cannot implicitly convert type 'string' to 'PublicDomain.TzTimeZone'

TzTimeZone zone = "Australia/Perth";

New Post: Just new to PublicDomain.dll

tallboy — Tue, 23 Sep 2008 16:36:36 GMT

Hi Guys,

Just new to PublicDomain.dll

I tried using the PublicDomain.dll in asp.net and it works fine. But I don't know which functions to use for my particular task.

I was given the task to create a function that will accept 2 parameters. First parameter is the datetime, second parameter is for the required timezone for conversion. And it should return a converted datetime based on timezone.

Can you help me on how to do the coding for this particular task of mine. Is this possible?

Thanks

New Post: I am new to Olson Time Zone Database .Net

OliverTallo — Tue, 23 Sep 2008 15:42:40 GMT

Hi schizoidboy,

I just included the publicdomain.dll in my bin folder, and it is working fine now.

Thanks

New Post: I am new to Olson Time Zone Database .Net

schizoidboy — Tue, 23 Sep 2008 00:49:01 GMT

Hi Oliver! To use TzTimeZone, just add a reference in your project to C:\Program Files\Public Domain\PublicDomain.dll. To do this from Visual Studio, right click on your project, click Add Reference, click on the Browse tab, and type in the file name above. Then everything should just work.
Let me know if you have any other questions,
Thanks,