RegionInfo 构造函数

参考

定义

命名空间:: System.Globalization

程序集:: System.Runtime.dll

程序集:: mscorlib.dll

程序集:: netstandard.dll

程序集:: System.Globalization.dll

重要

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初始化 RegionInfo 类的新实例。

重载

RegionInfo(Int32)	基于与指定的区域性标识符关联的国家/地区初始化 RegionInfo 类的一个新实例。
RegionInfo(String)	基于按名称指定的国家/地区或特定区域性初始化 RegionInfo 类的一个新实例。

RegionInfo(Int32)

Source:: RegionInfo.cs

Source:: RegionInfo.cs

Source:: RegionInfo.cs

基于与指定的区域性标识符关联的国家/地区初始化 RegionInfo 类的一个新实例。

public:
 RegionInfo(int culture);

public RegionInfo (int culture);

new System.Globalization.RegionInfo : int -> System.Globalization.RegionInfo

Public Sub New (culture As Integer)

参数

culture: Int32

区域性标识符。

例外

ArgumentException

culture 指定固定、自定义或非特定区域性。

-或-

仅限 .NET 6+：在环境中启用全球化固定模式。

示例

下面的代码示例比较了以不同方式创建的的 RegionInfo 两个实例。

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Creates a RegionInfo using the ISO 3166 two-letter code.
   RegionInfo^ myRI1 = gcnew RegionInfo( "US" );
   
   // Creates a RegionInfo using a CultureInfo.LCID.
   RegionInfo^ myRI2 = gcnew RegionInfo( (gcnew CultureInfo( "en-US",false ))->LCID );
   
   // Compares the two instances.
   if ( myRI1->Equals( myRI2 ) )
      Console::WriteLine( "The two RegionInfo instances are equal." );
   else
      Console::WriteLine( "The two RegionInfo instances are NOT equal." );
}

/*
This code produces the following output.

The two RegionInfo instances are equal.

*/

using System;
using System.Globalization;

public class SamplesRegionInfo  {

   public static void Main()  {

      // Creates a RegionInfo using the ISO 3166 two-letter code.
      RegionInfo myRI1 = new RegionInfo( "US" );

      // Creates a RegionInfo using a CultureInfo.LCID.
      RegionInfo myRI2 = new RegionInfo( new CultureInfo("en-US",false).LCID );

      // Compares the two instances.
      if ( myRI1.Equals( myRI2 ) )
         Console.WriteLine( "The two RegionInfo instances are equal." );
      else
         Console.WriteLine( "The two RegionInfo instances are NOT equal." );
   }
}

/*
This code produces the following output.

The two RegionInfo instances are equal.

*/

Imports System.Globalization


Public Class SamplesRegionInfo   

   Public Shared Sub Main()

      ' Creates a RegionInfo using the ISO 3166 two-letter code.
      Dim myRI1 As New RegionInfo("US")

      ' Creates a RegionInfo using a CultureInfo.LCID.
      Dim myRI2 As New RegionInfo(New CultureInfo("en-US", False).LCID)

      ' Compares the two instances.
      If myRI1.Equals(myRI2) Then
         Console.WriteLine("The two RegionInfo instances are equal.")
      Else
         Console.WriteLine("The two RegionInfo instances are NOT equal.")
      End If 

   End Sub

End Class


'This code produces the following output.
'
'The two RegionInfo instances are equal.

注解

RegionInfo(String) 是用于实例化 RegionInfo 对象的推荐构造函数。 RegionInfo(Int32)与需要数字区域性标识符作为参数的构造函数不同，其参数是更易于阅读的区域性名称或国家/地区代码。

区域性标识符映射到相应的国家/地区语言支持 (NLS) 区域设置标识符。有关详细信息，请参阅 Windows LCID 参考。

通过调用此构造函数实例化的新 RegionInfo 对象的属性的值Name是国家/地区的 ISO 3166 2 字母代码，而不是组合的语言和国家/地区代码。例如，如果使用RegionInfo英语 (美国) 区域性的区域性标识符0x0409实例化对象，则 Name 属性的值为“US”。相比之下，如果使用RegionInfo英语 (美国) 区域性的组合语言和国家/地区代码en-US实例化对象，则属性的值Name在 .NET Framework 中为“en-US”，在 .NET Core 和 .NET 5+ 中仅为“US”。

另请参阅

CultureInfo

适用于

RegionInfo(String)

Source:: RegionInfo.cs

Source:: RegionInfo.cs

Source:: RegionInfo.cs

基于按名称指定的国家/地区或特定区域性初始化 RegionInfo 类的一个新实例。

public:
 RegionInfo(System::String ^ name);

public RegionInfo (string name);

new System.Globalization.RegionInfo : string -> System.Globalization.RegionInfo

Public Sub New (name As String)

参数

name: String

一个字符串，它包含 ISO 3166 中为国家/地区定义的由两个字母组成的代码。

- 或 -

包含特定区域、自定义区域或仅 Windows 区域的区域名称的字符串。如果区域性名称未采用 RFC 4646 格式，应用程序应指定整个区域性名称，而不是仅指定国家/地区。

例外

ArgumentNullException

name 为 null。

ArgumentException

name 不是有效的国家/地区名称或特定的区域性名称。

-或-

仅限 .NET 6+：在环境中启用全球化固定模式。

示例

下面的代码示例比较了以不同方式创建的的 RegionInfo 两个实例。

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Creates a RegionInfo using the ISO 3166 two-letter code.
   RegionInfo^ myRI1 = gcnew RegionInfo( "US" );
   
   // Creates a RegionInfo using a CultureInfo.LCID.
   RegionInfo^ myRI2 = gcnew RegionInfo( (gcnew CultureInfo( "en-US",false ))->LCID );
   
   // Compares the two instances.
   if ( myRI1->Equals( myRI2 ) )
      Console::WriteLine( "The two RegionInfo instances are equal." );
   else
      Console::WriteLine( "The two RegionInfo instances are NOT equal." );
}

/*
This code produces the following output.

The two RegionInfo instances are equal.

*/

using System;
using System.Globalization;

public class SamplesRegionInfo  {

   public static void Main()  {

      // Creates a RegionInfo using the ISO 3166 two-letter code.
      RegionInfo myRI1 = new RegionInfo( "US" );

      // Creates a RegionInfo using a CultureInfo.LCID.
      RegionInfo myRI2 = new RegionInfo( new CultureInfo("en-US",false).LCID );

      // Compares the two instances.
      if ( myRI1.Equals( myRI2 ) )
         Console.WriteLine( "The two RegionInfo instances are equal." );
      else
         Console.WriteLine( "The two RegionInfo instances are NOT equal." );
   }
}

/*
This code produces the following output.

The two RegionInfo instances are equal.

*/

Imports System.Globalization


Public Class SamplesRegionInfo   

   Public Shared Sub Main()

      ' Creates a RegionInfo using the ISO 3166 two-letter code.
      Dim myRI1 As New RegionInfo("US")

      ' Creates a RegionInfo using a CultureInfo.LCID.
      Dim myRI2 As New RegionInfo(New CultureInfo("en-US", False).LCID)

      ' Compares the two instances.
      If myRI1.Equals(myRI2) Then
         Console.WriteLine("The two RegionInfo instances are equal.")
      Else
         Console.WriteLine("The two RegionInfo instances are NOT equal.")
      End If 

   End Sub

End Class


'This code produces the following output.
'
'The two RegionInfo instances are equal.

下面的代码示例使用区域性名称创建的 RegionInfo 实例。

using namespace System;
using namespace System::Collections;
using namespace System::Globalization;

namespace Sample
{
    public ref class SamplesRegionInfo  
    {
    public: 
        static void Work()  
        {

            // Creates an array containing culture names.
            array <String^>^ commonCultures = 
                {"", "ar", "ar-DZ", "en", "en-US"};

            // Creates a RegionInfo for each of the culture names.
            // Note that "ar" is the culture name for the neutral 
            // culture  "Arabic", but it is also the region name for
            // the country/region "Argentina"; therefore, it does not 
            // fail as expected.
            Console::WriteLine("Without checks...");
            for each (String^ cultureID in commonCultures)
            {   
                try  
                {
                    RegionInfo^ region = 
                    gcnew RegionInfo(cultureID);
                }

                catch (ArgumentException^ ex)  
                {
                    Console::WriteLine(ex);
                }
            }

            Console::WriteLine();

            Console::WriteLine("Checking the culture"
                " names first...");

            for each (String^ cultureID in commonCultures)
            {
                if (cultureID->Length == 0)  
                {
                    Console::WriteLine(
                        "The culture is the invariant culture.");
                }
                else  
                {
                    CultureInfo^ culture = 
                        gcnew CultureInfo(cultureID, false);
                    if (culture->IsNeutralCulture)
                    {
                        Console::WriteLine("The culture {0} is "
                            "a neutral culture.", cultureID);
                    }
                    else   
                    {
                        Console::WriteLine("The culture {0} is "
                            "a specific culture.", cultureID);
                        try  
                        {
                            RegionInfo^ region = 
                                gcnew RegionInfo(cultureID);
                        }
                        catch (ArgumentException^ ex)  
                        {
                            Console::WriteLine(ex);
                        }
                    }
                }
            } 
            Console::ReadLine();
        }
    };
}

int main()
{
    Sample::SamplesRegionInfo::Work();
    return 0;
}

/*
This code produces the following output.

Without checks...
System.ArgumentException: Region name '' is not supported.
Parameter name: name
at System.Globalization.RegionInfo..ctor(String name)
at SamplesRegionInfo.Main()
System.ArgumentException: Region name 'en' is not supported.
Parameter name: name
at System.Globalization.CultureTableRecord..ctor(String regionName, 
   Boolean useUserOverride)
at System.Globalization.RegionInfo..ctor(String name)
at SamplesRegionInfo.Main()

Checking the culture names first...
The culture is the invariant culture.
The culture ar is a neutral culture.
The culture ar-DZ is a specific culture.
The culture en is a neutral culture.
The culture en-US is a specific culture.

*/

using System;
using System.Globalization;

public class SamplesRegionInfo  {

   public static void Main()  {

      // Creates an array containing culture names.
      String[] myCultures = new String[]  { "", "ar", "ar-DZ", "en", "en-US" };

      // Creates a RegionInfo for each of the culture names.
      //    Note that "ar" is the culture name for the neutral culture "Arabic",
      //    but it is also the region name for the country/region "Argentina";
      //    therefore, it does not fail as expected.
      Console.WriteLine("Without checks...");
      foreach (String culture in myCultures)  {
         try  {
            RegionInfo myRI = new RegionInfo( culture );
         }
         catch ( ArgumentException e )  {
            Console.WriteLine( e.ToString() );
         }
      }

      Console.WriteLine();

      Console.WriteLine( "Checking the culture names first..." );
      foreach (String culture in myCultures)  {
         if ( culture == "" )  {
            Console.WriteLine("The culture is the invariant culture.");
         }
         else  {
            CultureInfo myCI = new CultureInfo( culture, false );
            if ( myCI.IsNeutralCulture )
                {
                    Console.WriteLine( "The culture {0} is a neutral culture.", culture );
                }
                else   {
               Console.WriteLine( "The culture {0} is a specific culture.", culture );
               try  {
                  RegionInfo myRI = new RegionInfo( culture );
               }
               catch ( ArgumentException e )  {
                  Console.WriteLine( e.ToString() );
               }
            }
         }
      }
   }
}

/*
This code produces the following output.

Without checks...
System.ArgumentException: Region name '' is not supported.
Parameter name: name
   at System.Globalization.RegionInfo..ctor(String name)
   at SamplesRegionInfo.Main()
System.ArgumentException: Region name 'en' is not supported.
Parameter name: name
   at System.Globalization.CultureTableRecord..ctor(String regionName, Boolean useUserOverride)
   at System.Globalization.RegionInfo..ctor(String name)
   at SamplesRegionInfo.Main()

Checking the culture names first...
The culture is the invariant culture.
The culture ar is a neutral culture.
The culture ar-DZ is a specific culture.
The culture en is a neutral culture.
The culture en-US is a specific culture.

*/

Imports System.Globalization

Public Class SamplesRegionInfo

    Public Shared Sub Main()

        ' Creates an array containing culture names.
        Dim myCultures() As String = {"", "ar", "ar-DZ", "en", "en-US"}

        Dim culture As String

        ' Creates a RegionInfo for each of the culture names.
        '    Note that "ar" is the culture name for the neutral culture "Arabic",
        '    but it is also the region name for the country/region "Argentina";
        '    therefore, it does not fail as expected.
        Console.WriteLine("Without checks...")
        For Each culture In  myCultures
            Try
                Dim myRI As New RegionInfo(culture)
            Catch e As ArgumentException
                Console.WriteLine(e.ToString())
            End Try
        Next

        Console.WriteLine()

        Console.WriteLine("Checking the culture names first...")
        For Each culture In  myCultures
            If culture = "" Then
                Console.WriteLine("The culture is the invariant culture.")
            Else
                Dim myCI As New CultureInfo(culture, False)
                If myCI.IsNeutralCulture Then
                    Console.WriteLine("The culture {0} is a neutral culture.", culture)
                Else
                    Console.WriteLine("The culture {0} is a specific culture.", culture)
                    Try
                        Dim myRI As New RegionInfo(culture)
                    Catch e As ArgumentException
                        Console.WriteLine(e.ToString())
                    End Try
                End If
            End If
        Next
    End Sub  
End Class 
'The example displays the following output.
'
'Without checks...
'System.ArgumentException: Region name '' is not supported.
'Parameter name: name
'   at System.Globalization.RegionInfo..ctor(String name)
'   at SamplesRegionInfo.Main()
'System.ArgumentException: Region name 'en' is not supported.
'Parameter name: name
'   at System.Globalization.CultureTableRecord..ctor(String regionName, Boolean useUserOverride)
'   at System.Globalization.RegionInfo..ctor(String name)
'   at SamplesRegionInfo.Main()
'
'Checking the culture names first...
'The culture is the invariant culture.
'The culture ar is a neutral culture.
'The culture ar-DZ is a specific culture.
'The culture en is a neutral culture.
'The culture en-US is a specific culture.

注解

参数 name 是为国家/地区定义的代码之一，或者是特定的、自定义的或仅限 Windows 的区域性名称。大小写不重要。但是， Name TwoLetterISORegionName和 ThreeLetterISORegionName 属性以大写形式返回指定的代码或区域性名称。

ISO 3166：国家/地区代码中列出了预定义RegionInfo的名称。

应在参数中 name 提供特定区域性的名称，而不仅仅是国家/地区名称。例如，en-US对于英语 (美国) 或es-US西班牙语 (美国) 更适合US，因为和 CurrencyNativeName 等NativeName属性反映了特定的语言。 az-Latn-AZ或 az-Cyrl-AZ 优先于 AZ ，因为、 CurrencyNativeName和 CurrencySymbol 等NativeName属性反映特定的脚本。预定义的区域性名称列在 Windows LCID 引用中。

如果 name 是非特定区域性 (（例如en英语) ），则此构造函数将引发 ArgumentException 。

调用方说明

此构造函数仅接受特定区域性或国家/地区代码。但是，某些中性区域性名称与国家/地区代码相同。在这种情况下， name 被解释为国家/地区代码而不是非特定区域性名称，并且此构造函数不会引发 ArgumentException。

适用于

RegionInfo 构造函数

定义

重载

RegionInfo(Int32)

参数

例外

示例

注解

另请参阅

适用于

RegionInfo(String)

参数

例外

示例

注解

调用方说明

适用于

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