ASP.Net Core MVC のローカリゼーションが機能しない - リソース ファイルが見つからない 質問する

アプリケーションをローカライズする際に、次の手順に従いました。https://docs.asp.net/en/latest/fundamentals/localization.html

これが私のコードです:

スタートアップ.cs

public List<IRequestCultureProvider> RequestCultureProviders { get; private set; }

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    services.AddLocalization(options => options.ResourcesPath = "Resources");

    services.AddMvc()
        .AddViewLocalization(options => options.ResourcesPath = "Resources")
        .AddDataAnnotationsLocalization();

    services.AddOptions();

    services.AddTransient<IViewRenderingService, ViewRenderingService>();

    services.AddTransient<IEmailSender, EmailSender>();
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    var locOptions = app.ApplicationServices.GetService<IOptions<RequestLocalizationOptions>>();
    app.UseRequestLocalization(locOptions.Value);

    app.UseStaticFiles();
    app.UseFileServer(new FileServerOptions()
    {
        FileProvider = new PhysicalFileProvider(
        Path.Combine(Directory.GetCurrentDirectory())),
        EnableDirectoryBrowsing = true
    });

    var supportedCultures = new[]
    {
        new CultureInfo("en-US"),
        new CultureInfo("fr"),
    };

    app.UseRequestLocalization(new RequestLocalizationOptions
    {
        DefaultRequestCulture = new RequestCulture("fr"),
        // Formatting numbers, dates, etc.
        SupportedCultures = supportedCultures,
        // UI strings that we have localized.
        SupportedUICultures = supportedCultures,
        RequestCultureProviders = new List<IRequestCultureProvider>
        {
           new QueryStringRequestCultureProvider
           {
               QueryStringKey = "culture",
               UIQueryStringKey = "ui-culture"
           }
        }
    });


}

public class MyController : Controller
{
    private readonly IViewRenderingService _viewRenderingService;
    private IStringLocalizer<MyController> _localizer;
    private MyOptions _options;
    //Constructor for dependency injection principle
    public MyController(IViewRenderingService viewRenderingService, IStringLocalizer<MyController> localizer, IOptions<MyOptions> options)
    {
        _viewRenderingService = viewRenderingService;
        _localizer = localizer;
        _options = options.Value;
    }

    [HttpGet]
    public string Get()
    {
        // _localizer["Name"] 
        return _localizer["Product"];
    }
}

localhost:3333/my?culture=fr