在C＃中，如何获取Windows 10中“区域和语言”下选择的“国家或地区”？

Question

我正在运行Windows 10.当我从开始菜单打开“区域&语言设置”时，我可以选择“国家或地区”。我正在尝试在C＃程序中获取此值。

我在丹麦。我曾尝试将我的国家改为德国（请参阅screenshot），但我无法让我的代码返回德国。重新启动电脑没有帮助。

我写了一些代码灵感来自this thread。

我的代码看起来像这样（试图马上各种各样的事情，让所有我能想到的区域/文化的东西）：

private static void Main(string[] args) 
{ 
    Thread.CurrentThread.CurrentCulture.ClearCachedData(); 
    Thread.CurrentThread.CurrentUICulture.ClearCachedData(); 
    var thread = new Thread(() => ((Action) (() => 
    { 
     Console.WriteLine("Current culture: {0}", Thread.CurrentThread.CurrentCulture.Name); 
     Console.WriteLine("Current UI culture: {0}", Thread.CurrentThread.CurrentUICulture.Name); 
     Console.WriteLine("Installed UI culture: {0}", CultureInfo.InstalledUICulture.Name); 
     Console.WriteLine("Current region: {0}", RegionInfo.CurrentRegion.ThreeLetterISORegionName); 
     Console.WriteLine("System default LCID: {0}", GetSystemDefaultLCID()); 
    }))()); 
    thread.Start(); 
    thread.Join(); 
    Console.ReadKey(); 
} 

[DllImport("kernel32.dll")] 
private static extern uint GetSystemDefaultLCID(); 

它输出：

Current culture: en-DK 
Current UI culture: en-US 
Installed UI culture: en-US 
Current region: DNK 
System default LCID: 1033 

我怎样才能得到我的程序检测到我选择了德国？我需要拨打什么方法或财产？什么重新启动或缓存清除可能是必要的？

Answer 1

我找到了答案，我的问题在this thread。

我正在使用下面的代码，由@SanjaySingh在该线程中提出，只是稍作修改。

如果我打电话GetMachineCurrentLocation与geoFriendlyname参数集5，我得到的三个字母的ISO地区代码我要（为德国，这是"DEU"）。

geoFriendlyname的值可以找到here。

public static class RegionAndLanguageHelper 
{ 
    #region Constants 

    private const int GEO_FRIENDLYNAME = 8; 

    #endregion 

    #region Private Enums 

    private enum GeoClass : int 
    { 
     Nation = 16, 
     Region = 14, 
    }; 

    #endregion 

    #region Win32 Declarations 

    [DllImport("kernel32.dll", ExactSpelling = true, CallingConvention = CallingConvention.StdCall, SetLastError = true)] 
    private static extern int GetUserGeoID(GeoClass geoClass); 

    [DllImport("kernel32.dll")] 
    private static extern int GetUserDefaultLCID(); 

    [DllImport("kernel32.dll")] 
    private static extern int GetGeoInfo(int geoid, int geoType, StringBuilder lpGeoData, int cchData, int langid); 

    #endregion 

    #region Public Methods 

    /// <summary> 
    /// Returns machine current location as specified in Region and Language settings. 
    /// </summary> 
    /// <param name="geoFriendlyname"></param> 
    public static string GetMachineCurrentLocation(int geoFriendlyname) 
    { 
     int geoId = GetUserGeoID(GeoClass.Nation); ; 
     int lcid = GetUserDefaultLCID(); 
     StringBuilder locationBuffer = new StringBuilder(100); 
     GetGeoInfo(geoId, geoFriendlyname, locationBuffer, locationBuffer.Capacity, lcid); 

     return locationBuffer.ToString().Trim(); 
    } 

    #endregion 
} 

Answer 2

Read msdn documentation: RegionInfo Properties

var regionInfo = RegionInfo.CurrentRegion; 
var name = regionInfo.Name; 
var englishName = regionInfo.EnglishName; 
var displayName = regionInfo.DisplayName; 

Console.WriteLine("Name: {0}", name); 
Console.WriteLine("EnglishName: {0}", englishName); 
Console.WriteLine("DisplayName: {0}", displayName); 

名称：DE
中文名：德国
显示名称：德国

Answer 3

尝试

var geographicRegion = new Windows.Globalization.GeographicRegion(); 
    var code = geographicRegion.CodeTwoLetter; 

或

var region = Windows.System.UserProfile.GlobalizationPreferences.HomeGeographicRegion;