When building an application for Windows 8 we find the same known feature for Globalization through the CultureInfo.CurrentCulture and CultureInfo.CurrentUICulture properties, used in many cases where it comes to using culture-specific strings, formatting dates, numbers, etc. And while developing, you might be surprised that, in the common scenario, the current culture does not derive from the OS culture for the current machine.
Then, how the current culture is resolved? It turns out that there is a way to get the correct OS UI culture. To understand the process I will start from a blank app and modify it for our needs. Package.appxmanifest default language