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Get operating system language in C#

To get operating system language in C#, we can use CultureInfo.InstalledUICulture Property which represents the culture installed with the operating system. CultureInfo hase many built in properties like: Name, DisplayName, TwoLetterISOLanguageName, ThreeLetterISOLanguageName, ThreeLetterWindowsLanguageName ...


using System;
using System.Globalization;

public class Example
    public static void Main()
	    CultureInfo ci = CultureInfo.InstalledUICulture ;

	    Console.WriteLine("Default Language Info:" ) ;
	    Console.WriteLine("* Name: {0}"                    , ci.Name ) ;
	    Console.WriteLine("* Display Name: {0}"            , ci.DisplayName ) ;
	    Console.WriteLine("* English Name: {0}"            , ci.EnglishName ) ;
	    Console.WriteLine("* 2-letter ISO Name: {0}"       , ci.TwoLetterISOLanguageName ) ;
	    Console.WriteLine("* 3-letter ISO Name: {0}"       , ci.ThreeLetterISOLanguageName ) ;
	    Console.WriteLine("* 3-letter Win32 API Name: {0}" , ci.ThreeLetterWindowsLanguageName ) ;


Default Language Info:
* Name: en-US
* Display Name: English (United States)
* English Name: English (United States)
* 2-letter ISO Name: en
* 3-letter ISO Name: eng
* 3-letter Win32 API Name: ENU


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