c# - 如何在 Windows Phone 上更改 C# 中的本地化？

Question

我有两种语言的资源文件，我的应用程序已经读取了其中一种语言的值。我希望能够在 C# 中更改我的应用程序的语言（使用其他资源文件），而不是在设置中更改整个手机的语言。

这可能吗？如果是这样，怎么做？

Answer 1

在App.xaml.cs，在InitializePhoneApplication方法中：

private void InitializePhoneApplication()
{
    Thread.CurrentThread.CurrentCulture = new CultureInfo("fr-FR");
    Thread.CurrentThread.CurrentUICulture = Thread.CurrentThread.CurrentCulture;
    .......
}

限制是它需要在应用程序初始化中，所以如果用户更改语言，则需要重新启动才能生效。

Answer 2

您可以通过重新加载用户更改语言的页面并维护页面布局的 RTL/LTR 来执行此操作而无需重新启动

我在 App.xaml.cs 中添加了这个函数

public static void ChangeAppLanguage(string CultureName)
    {
        App.RootFrame.Language = XmlLanguage.GetLanguage(CultureName);
        FlowDirection flow = (FlowDirection)Enum.Parse(typeof(FlowDirection), AppResources.ResourceFlowDirection);
        App.RootFrame.FlowDirection = flow;
        App.Current.RootVisual.UpdateLayout();
        App.RootFrame.UpdateLayout();
        var ReloadUri =( App.RootFrame.Content as PhoneApplicationPage).NavigationService.CurrentSource;
        (Application.Current.RootVisual as PhoneApplicationFrame).Navigate(new Uri(ReloadUri + "?no-cache=" + Guid.NewGuid(), UriKind.Relative));
    }

其中 CultureName 像这样：“ar-SA”、“en-US”

我这样打电话

private void EnglishMenuItem_Click(object sender, EventArgs e)
    {            
        try
        {
            if(Thread.CurrentThread.CurrentCulture.Name == "en-US")
                Thread.CurrentThread.CurrentCulture = new CultureInfo("ar-SA");
            else
                Thread.CurrentThread.CurrentCulture = new CultureInfo("en-US");
            Thread.CurrentThread.CurrentUICulture = Thread.CurrentThread.CurrentCulture;

            AppResources.Culture = Thread.CurrentThread.CurrentCulture;

            App.ChangeAppLanguage(Thread.CurrentThread.CurrentCulture.Name);

            //this._contentLoaded = false; //this way does not refresh appBar
            //this.InitializeComponent();

            //this way work for one time only => if user change language more thane once the api does NOT call constructor
            //NavigationService.Navigate(new System.Uri("/PhoneApp2;component/MainPage.xaml", System.UriKind.Relative));

        }
        catch (Exception ex)
        {
            MessageBox.Show("error:\n\n" + ex.Message);
        }
    }