Question

由于来自microsoft的以下信息，我稍微更新了我的代码。听起来他们将当前的文化更新为我可以使用的东西。

对于面向.NET Framework 4.6及更高版本的应用， CultureInfo.CurrentCulture和CultureInfo.CurrentUICulture被存储在一个线程的ExecutionContext中，它跨越异步操作。（来源：https://msdn.microsoft.com/en-us/library/dn833123(v=vs.110).aspx）

using System;
using System.Globalization;
using System.Threading;
using System.Threading.Tasks;

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("start " + Thread.CurrentThread.CurrentCulture.ToString() + " " + Thread.CurrentThread.ManagedThreadId);
        RunAsync().Wait();
        Console.WriteLine("Finish " + Thread.CurrentThread.CurrentCulture.ToString() + " " + Thread.CurrentThread.ManagedThreadId);
        Console.ReadKey();
    }

    static async Task RunAsync()
    {
        Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("de-DE");

        Console.WriteLine("1 " + Thread.CurrentThread.CurrentCulture.ToString() + " " + Thread.CurrentThread.ManagedThreadId);
        string cultureInTask = string.Empty;

        await Task.Run(() => cultureInTask = Thread.CurrentThread.CurrentCulture.ToString() + " " + Thread.CurrentThread.ManagedThreadId).ConfigureAwait(true);

        Console.WriteLine("2 " + cultureInTask);
        string twoA = await TestMethodAsync();
        Console.WriteLine("2a " + twoA + " " + Thread.CurrentThread.ManagedThreadId);
        Console.WriteLine("3 " + Thread.CurrentThread.CurrentCulture.ToString() + " " + Thread.CurrentThread.ManagedThreadId);            
    }

    public static async Task<string> TestMethodAsync()
    {
        Console.WriteLine("2s " + Thread.CurrentThread.CurrentCulture.ToString() + " " + Thread.CurrentThread.ManagedThreadId);
        return await Task.Run(() =>
        {
            return System.Threading.Thread.CurrentThread.CurrentUICulture.ToString() + " " + Thread.CurrentThread.ManagedThreadId;
        });
    }
}

输出：

start en-US 1
1 de-DE 1
2 de-DE 3
2s de-DE 3
2a en-US 4 4
3 de-DE 4
Finish en-US 1

但是为什么2a回归en-US而不是de-DE？是因为executionContext不同吗？如果是这样，我怎样才能保持相同的执行环境？

Answer 1

CurrentCulture和CurrentUICulture是独立的属性。您只需设置CurrentCulture，并且您在报告CurrentUICulture的情况下报告除了以外的所有地方<{1}}。如果你在整个代码中使用相同的属性（任何一个属性应该没问题），它会给你预期的结果。

.net-4.6中的Async Thread.CurrentThread.CurrentCulture

1 个答案: