CultureInfo.DefaultThreadCurrentCulture 属性

参考

定义

命名空间:: System.Globalization

程序集:: System.Globalization.dll

程序集:: System.Runtime.dll

程序集:: mscorlib.dll

程序集:: netstandard.dll

Source:: CultureInfo.cs

Source:: CultureInfo.cs

Source:: CultureInfo.cs

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

获取或设置当前应用程序域中线程的默认区域性。

public:
 static property System::Globalization::CultureInfo ^ DefaultThreadCurrentCulture { System::Globalization::CultureInfo ^ get(); void set(System::Globalization::CultureInfo ^ value); };

public static System.Globalization.CultureInfo DefaultThreadCurrentCulture { get; set; }

public static System.Globalization.CultureInfo? DefaultThreadCurrentCulture { get; set; }

static member DefaultThreadCurrentCulture : System.Globalization.CultureInfo with get, set

Public Shared Property DefaultThreadCurrentCulture As CultureInfo

属性值

CultureInfo

如果当前系统区域性为应用程序域中的默认线程区域性，则为当前应用程序中线程的默认区域性或 null。

示例

以下示例演示了 .NET Framework在定义新线程的当前区域性时的默认行为。在启动时，该示例将当前区域性和当前 UI 区域性设置为法语 (法国) ，默认系统区域性已是法语 (法国) 。如果默认系统区域性已经是法语 (法国) ，则代码会将当前区域性和当前 UI 区域性设置为英语 (美国) 。然后， DisplayRandomNumbers 它调用例程，该例程生成三个随机数并将其显示为货币值。接下来，它会创建一个新线程，该线程也执行例 DisplayRandomNumbers 程。

using System;
using System.Globalization;
using System.Text;
using System.Threading;

public class Example
{
   public static void Main()
   {
      Console.OutputEncoding = Encoding.UTF8;
      // Change current culture
      CultureInfo culture;
      if (Thread.CurrentThread.CurrentCulture.Name == "fr-FR")
         culture = CultureInfo.CreateSpecificCulture("en-US");
      else
         culture = CultureInfo.CreateSpecificCulture("fr-FR");

      Thread.CurrentThread.CurrentCulture = culture;
      Thread.CurrentThread.CurrentUICulture = culture;

      // Generate and display three random numbers on the current thread.
      DisplayRandomNumbers();
      Thread.Sleep(1000);

      Thread workerThread = new Thread(new ThreadStart(Example.DisplayRandomNumbers));
      workerThread.Start();
   }

   private static void DisplayRandomNumbers()
   {
      Console.WriteLine();
      Console.WriteLine("Current Culture:    {0}",
                        Thread.CurrentThread.CurrentCulture);
      Console.WriteLine("Current UI Culture: {0}",
                        Thread.CurrentThread.CurrentUICulture);

      Console.Write("Random Values: ");
      Random rand = new Random();
      for (int ctr = 0; ctr <= 2; ctr++)
         Console.Write("     {0:C2}     ", rand.NextDouble());

      Console.WriteLine();
   }
}
// The example displays output similar to the following:
//    Current Culture:    fr-FR
//    Current UI Culture: fr-FR
//    Random Values:      0,77 €          0,35 €          0,52 €
//
//    Current Culture:    en-US
//    Current UI Culture: en-US
//    Random Values:      $0.30          $0.79          $0.65

Imports System.Globalization
Imports System.Text
Imports System.Threading

Module Example

   Public Sub Main()
      Console.OutputEncoding = Encoding.UTF8 
      ' Change current culture
      Dim culture As CultureInfo
      If Thread.CurrentThread.CurrentCulture.Name = "fr-FR" Then
         culture = CultureInfo.CreateSpecificCulture("en-US")
      Else
         culture = CultureInfo.CreateSpecificCulture("fr-FR")
      End If   
      Thread.CurrentThread.CurrentCulture = culture
      Thread.CurrentThread.CurrentUICulture = culture
      
      ' Generate and display three random numbers on the current thread.
      DisplayRandomNumbers()
      Thread.Sleep(1000)
      
      Dim workerThread As New Thread(AddressOf Example.DisplayRandomNumbers)
      workerThread.Start()
   End Sub
   
   Private Sub DisplayRandomNumbers()
      Console.WriteLine()
      Console.WriteLine("Current Culture:    {0}", 
                        Thread.CurrentThread.CurrentCulture)
      Console.WriteLine("Current UI Culture: {0}", 
                        Thread.CurrentThread.CurrentUICulture)

      Console.Write("Random Values: ")
      Dim rand As New Random()
      For ctr As Integer = 0 To 2
         Console.Write("     {0:C2}     ", rand.NextDouble())
      Next      
      Console.WriteLine()
   End Sub
End Module
' The example displays output similar to the following:
'    Current Culture:    fr-FR
'    Current UI Culture: fr-FR
'    Random Values:      0,77 €          0,35 €          0,52 €     
'    
'    Current Culture:    en-US
'    Current UI Culture: en-US
'    Random Values:      $0.30          $0.79          $0.65

如示例输出所示，在系统区域性为英语 (美国) 的计算机上运行该示例时，main线程使用法语 (法国) 区域性的格式约定显示其货币值。但是，由于工作线程的区域性派生自当前 Windows 系统区域性而不是应用程序的当前区域性，因此工作线程使用英语 (美国) 区域性的格式约定显示其货币值。

以下示例使用 DefaultThreadCurrentCulture 和 DefaultThreadCurrentUICulture 属性来定义新应用程序线程的当前区域性和当前 UI 区域性。在启动时，该示例将当前区域性和当前 UI 区域性设置为法语 (法国) ，默认系统区域性已是法语 (法国) 。如果默认系统区域性已经是法语 (法国) ，则会将当前区域性和当前 UI 区域性设置为英语 (美国) 。然后， DisplayRandomNumbers 它调用例程，该例程生成三个随机数并将其显示为货币值。接下来，它会创建一个新线程，该线程也执行例 DisplayRandomNumbers 程。

using System;
using System.Globalization;
using System.Text;
using System.Threading;

public class Example
{
   public static void Main()
   {
      Console.OutputEncoding = Encoding.UTF8;
      // Change current culture
      CultureInfo culture;
      if (Thread.CurrentThread.CurrentCulture.Name == "fr-FR")
         culture = CultureInfo.CreateSpecificCulture("en-US");
      else
         culture = CultureInfo.CreateSpecificCulture("fr-FR");

      CultureInfo.DefaultThreadCurrentCulture = culture;
      CultureInfo.DefaultThreadCurrentUICulture = culture;

      Thread.CurrentThread.CurrentCulture = culture;
      Thread.CurrentThread.CurrentUICulture = culture;

      // Generate and display three random numbers on the current thread.
      DisplayRandomNumbers();
      Thread.Sleep(1000);

      Thread workerThread = new Thread(new ThreadStart(Example.DisplayRandomNumbers));
      workerThread.Start();
   }

   private static void DisplayRandomNumbers()
   {
      Console.WriteLine();
      Console.WriteLine("Current Culture:    {0}",
                        Thread.CurrentThread.CurrentCulture);
      Console.WriteLine("Current UI Culture: {0}",
                        Thread.CurrentThread.CurrentUICulture);

      Console.Write("Random Values: ");
      Random rand = new Random();
      for (int ctr = 0; ctr <= 2; ctr++)
         Console.Write("     {0:C2}     ", rand.NextDouble());

      Console.WriteLine();
   }
}
// The example displays output similar to the following:
//    Current Culture:    fr-FR
//    Current UI Culture: fr-FR
//    Random Values:      0,78 €          0,80 €          0,37 €
//
//    Current Culture:    fr-FR
//    Current UI Culture: fr-FR
//    Random Values:      0,52 €          0,32 €          0,15 €

Imports System.Globalization
Imports System.Text
Imports System.Threading

Module Example
   Public Sub Main()
      Console.OutputEncoding = Encoding.UTF8 
      ' Change current culture
      Dim culture As CultureInfo
      
      If Thread.CurrentThread.CurrentCulture.Name = "fr-FR" Then
         culture = CultureInfo.CreateSpecificCulture("en-US")
      Else
         culture = CultureInfo.CreateSpecificCulture("fr-FR")
      End If   
      CultureInfo.DefaultThreadCurrentCulture = culture
      CultureInfo.DefaultThreadCurrentUICulture = culture
      
      Thread.CurrentThread.CurrentCulture = culture
      Thread.CurrentThread.CurrentUICulture = culture
      
      ' Generate and display three random numbers on the current thread.
      DisplayRandomNumbers()
      Thread.Sleep(1000)
      
      Dim workerThread As New Thread(AddressOf Example.DisplayRandomNumbers)
      workerThread.Start()
   End Sub
   
   Private Sub DisplayRandomNumbers()
      Console.WriteLine()
      Console.WriteLine("Current Culture:    {0}", 
                        Thread.CurrentThread.CurrentCulture)
      Console.WriteLine("Current UI Culture: {0}", 
                        Thread.CurrentThread.CurrentUICulture)
      Console.Write("Random Values: ")
      Dim rand As New Random()
      For ctr As Integer = 0 To 2
         Console.Write("     {0:C2}     ", rand.NextDouble())
      Next      
      Console.WriteLine()
   End Sub
End Module
' The example displays output similar to the following:
'    Current Culture:    fr-FR
'    Current UI Culture: fr-FR
'    Random Values:      0,78 €          0,80 €          0,37 €
'    
'    Current Culture:    fr-FR
'    Current UI Culture: fr-FR
'    Random Values:      0,52 €          0,32 €          0,15 €

如示例输出所示，在系统区域性为英语 (美国) 的计算机上运行该示例时，main线程和工作线程都使用法语 (法国) 区域性的格式约定显示其货币值。

注解

在 .NET Framework 4 及早期版本中，默认情况下，所有线程的区域性都设置为 Windows 系统区域性。对于当前区域性不同于默认系统区域性的应用程序，此行为通常是不可取的。在 .NET Framework 4.5 中， DefaultThreadCurrentCulture 属性使应用程序能够定义应用程序域中所有线程的默认区域性。

重要

如果尚未显式设置在应用程序域中执行的任何现有线程的区域性，则设置 DefaultThreadCurrentCulture 属性也会更改这些线程的区域性。但是，如果这些线程在另一个应用程序域中执行，则它们的区域性由 DefaultThreadCurrentCulture 该应用程序域中的属性定义，如果未定义默认值，则由默认系统区域性定义。因此，建议始终显式设置main应用程序线程的区域性，而不是依赖 DefaultThreadCurrentCulture 属性来定义main应用程序线程的区域性。

除非显式设置，否则属性null的DefaultThreadCurrentCulture值为，并且应用程序域中尚未分配显式区域性的线程的区域性由默认 Windows 系统区域性定义。

有关区域性、线程和应用程序域的详细信息，请参阅参考页中的 CultureInfo “区域性和线程”和“区域性和应用程序域”部分。

适用于

通过

CultureInfo.DefaultThreadCurrentCulture 属性

定义

属性值

示例

注解

适用于

另请参阅

其他资源