Re: Finding the offset of a specific time zone

The Web Service that sends me those time stamps could do it, but I am not
sure the client is willing to go through that exercise. Rather than wait for
them to decide and come up with a cost estimate, a risk factor and the
general impact on the overall project, I better take care of business
myself.

Eddie



-----Original Message-----
From: Discussion of advanced .NET topics.
[mailto:[email protected]] On Behalf Of Michael Levy
Sent: Wednesday, March 25, 2009 1:28 PM
To: [email protected]
Subject: Re: [ADVANCED-DOTNET] Finding the offset of a specific time zone

Can the devices be reconfigured to use UTC instead of the local time?

-Mike

On Wed, Mar 25, 2009 at 12:59 PM, Eddie Lascu <[email protected]> wrote:

>
> Peter,
>
> Everything you said, I already figured it out and it's not helping me.
>
> Again, a time stamp coming from the field device belongs to a 
> different time zone, so using "ToUniversalTime" will give me the wrong 
> result because "ToUniversalTime" assumes the time is local which is 
> not the case. I explained that the field devices and the server that 
> runs my application are in different time zones.
>
> On the other hand, I found a class that mimics what TimeZoneInfo does 
> in .NET 3.5. Incidentally, it is also called TimeZoneInfo. You can get 
> it
> here:
>
> http://www.codeproject.com/KB/vb/TimeZoneInfo.aspx
>
> With that, I can instantiate an object of type TimeZoneInfo for 
> Pacific Time (this would be the only parameter that I need to keep in 
> my configuration
> file: the name of the time zone where the field devices are located).
> Having
> that object (which is built based on available time zone information 
> from the subkeys of the registry's 
> HKEY_LOCAL_MACHINE\Software\Microsoft\Windows
> NT\CurrentVersion\Time Zones key), I can ask what is the Current Time 
> Offset and that is the offset I need to add to the values that come 
> from the field devices in order to obtain the correct UTC.
>
> Thank you everyone for pitching in with your ideas.
>
> Regards,
> Eddie
>
>
>
> -----Original Message-----
> From: Discussion of advanced .NET topics.
> [mailto:[email protected]] On Behalf Of Peter 
> Ritchie
> Sent: Wednesday, March 25, 2009 12:44 PM
> To: [email protected]
>  Subject: Re: [ADVANCED-DOTNET] Finding the offset of a specific time 
> zone
>
> You can use DateTime.UtcNow to get the current time in UTC.  e.g.:
> DateTime utcDate = DateTime.UtcNow;
>
> You can use DateTime.ToUniversalTime() to convert a local time to UTC.
> e.g.:
> DateTime date = new DateTime(1968, 11, 05, 12,0,0); DateTime utcDate = 
> date.ToUniversalTime();
>
> You can change the type of a date from local to UTC with the 
> SpecifyKind method (i.e. you get a DateTime object from a database; 
> but it's default kind is local and its value is actually UTC) e.g:
> DateTime dateTime = GetRecordDateFromDatabase(id); dateTime = 
> dateTime.SpecifyKind(DateTimeKind.Utc);
>
> You can convert a UTC time to local time with DateTime.ToLocalTime.  E.g.:
> DateTime utcDate = GetUtcDateFromSomewhere(); DateTime localDate = 
> utcDate .ToLocalTime();
>
> -- Peter
>
> ===================================
> View archives and manage your subscription(s) at 
> http://peach.ease.lsoft.com/archives
>
> ===================================
> View archives and manage your subscription(s) at 
> http://peach.ease.lsoft.com/archives
>



--
Michael Levy MCPD, MCDBA
[email protected]

===================================
View archives and manage your subscription(s) at
http://peach.ease.lsoft.com/archives

===================================
View archives and manage your subscription(s) at http://peach.ease.lsoft.com/archives