I want to know the setting or location from where System.Globalization.CultureInfo.CurrentCulture reads its value.
I am using a windows 7 laptop and have changed my system’s regional and date-time settings to US.
I got my code working using below setting in web.config under
<globalization culture="en-US" />
Thanks
Answers:
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Method 1
the MSDN says
The culture is a property of the executing thread. This read-only property is equivalent to retrieving the CultureInfo object returned by the Thread.CurrentCulture property. When a thread is started, its culture is initially determined by calling the Windows GetUserDefaultLocaleName function.
In other words, it’s based on the Thread, witch has a context… in the ASP.NET context, that comes from the Locale used in the client Browser first if using Server Variables or the System Settings on everything else.
Under this Web context you can get it using the Server.Variables method on HTTP_ACCEPT_LANGUAGE and you will get something like:
en-US,en;q=0.8,pt-PT;q=0.6,pt;q=0.4
Witch states that the client browser has 3 languages set, where the first one is en-US.
Everything from System.Globalization comes from the System definitions just like the image below shows:

code above is:
<p>
<pre>System.Globalization.CultureInfo.CurrentCulture</pre>
is @System.Globalization.CultureInfo.CurrentCulture.EnglishName
</p>
No matter what browser is in use, the definition for System.Globalization will always come from the Operating System definition

Method 2
After spending 8 hours — Find out a solution Thanks to Ronald — CultureInfo values differ between applications for the same culture. Is this a bug?
It turns out that regional settings are stored per user in Windows.
This is something I should have been aware of. Updating the
application pool to run as myself produced the same result across both
applications.To be fair, what is still confusing is how Network Service (the
account the application pool was running under) came to have the
incorrect value. I’m not even sure how I’d rectify that.Edit:
If you need to update the regional settings for reserved accounts. You
have two options.Control Panel > Regional Settings > Click the administrative tab and then select "Copy Settings".On the screen that launches, ensure
you check “Welcome Screen and system accounts”. Older versions of
Windows are similar I believe.
For the brace. Registry: HKEY_USERS > SID… > Control Panel > International. The security identifier for Network Service is: SID:
S-1-5-20.Ensure you restart the application pool for settings to take effect.
I did #1 — and it did a trick for me!
Method 3
It uses the windows GetUserDefaultLocaleName function.
http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo.currentculture.aspx
Method 4
In case of ASP.NET, from
HKEY_USERSS-1-5-20Control PanelInternational
S-1-5-20 is the security identifier of the Network Service “user” (http://support.microsoft.com/kb/243330)
For other types of applications, refer to the documentation of GetUserDefaultLocaleName function (https://msdn.microsoft.com/en-us/library/windows/desktop/dd318136%28v=vs.85%29.aspx)
For an easy GUI way of changing the locale of S-1-5-20, see sitecorebasics’s answer
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0