C# 依赖项注入参数null异常

我有一个带有依赖项注入的Startup.cs文件，如下所示：

    public class Startup : FunctionsStartup
    {
        public override void Configure(IFunctionsHostBuilder builder)
        {                       
            builder.Services.Configure<RequestLocalizationOptions>(opts =>
            {
                var supportedCultures = new List<CultureInfo>
                        {
                            new CultureInfo("en-US"),
                            new CultureInfo("es-ES"),
                            new CultureInfo("hi-IN")
                        };
                opts.DefaultRequestCulture = new RequestCulture("en-US");
                opts.SupportedCultures = supportedCultures;
                opts.SupportedUICultures = supportedCultures;
            });         
            builder.Services.AddSingleton<ILocalizationRepository, LocalizationRepository>();
        }
    }

公共类启动：函数启动
{
公共覆盖无效配置（IFunctionsHostBuilder）
{                       
builder.Services.Configure（选项=>
{
var supportedCultures=新列表
{
新文化信息（“美国”），
新文化信息（“es”），
新文化信息（“hi IN”）
};
opts.DefaultRequestCulture=新的RequestCulture（“en-US”）；
opts.SupportedCultures=SupportedCultures；
opts.supporteduccultures=支持的文化；
});         
builder.Services.AddSingleton（）；
}
}

我有以下接口和类“LocalizationRepository”：

    public interface ILocalizationRepository
    {
        string TranslateSetting(string settingName, params int[] additionalParams);
    }
    
    
    public class LocalizationRepository : ILocalizationRepository
    {
        private readonly IStringLocalizer<LocalizationRepository> _localizer;
        public LocalizationRepository(IStringLocalizer<LocalizationRepository> localizer)
        {
            _localizer = localizer ?? throw new ArgumentNullException(nameof(localizer));
        }

        public string TranslateSetting(string settingName, params int[] additionalParams)
        {
            return _localizer.GetString(settingName, additionalParams);
        }
    }

公共接口ILocalizationRepository
{
字符串转换设置（字符串设置名称，参数int[]附加参数）；
}
公共类本地化存储库：ILocalizationRepository
{
专用只读IStringLocalizer\u localizer；
公共本地化存储库（IStringLocalizer localizer）
{
_localizer=localizer？？抛出新ArgumentNullException（nameof（localizer））；
}
公共字符串转换设置（字符串设置名称，参数int[]附加参数）
{
return _localizer.GetString（settingName，additionalParams）；
}
}

---

运行此命令时，我看到ArgumentNullException-值不能为null。（参数“定位器”）。我错过了什么

调用堆栈：

System.ArgumentNullException:
   at Repositories.Localization.LocalizationRepository..ctor (Repositories.Localization, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullRepositories.Localization, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\Service\Repositories.Localization\LocalizationRepository.csRepositories.Localization, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 12)
   at lambda_method (Anonymously Hosted DynamicMethods Assembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null)
   at DryIoc.Factory+<>c__DisplayClass26_0.<ApplyReuse>b__2 (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 6605)
   at DryIoc.Scope.TryGetOrAdd (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 7849)
   at DryIoc.Scope.GetOrAdd (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 7834)
   at DryIoc.Factory.ApplyReuse (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 6604)
   at DryIoc.Factory.GetExpressionOrDefault (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 6564)
   at DryIoc.ReflectionFactory.CreateExpressionOrDefault (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 7083)
   at DryIoc.Factory.GetExpressionOrDefault (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 6554)
   at DryIoc.ReflectionFactory.CreateExpressionOrDefault (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 7083)
   at DryIoc.Factory.GetExpressionOrDefault (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 6554)
   at DryIoc.Factory.GetDelegateOrDefault (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 6634)
   at DryIoc.Container.ResolveAndCacheDefaultFactoryDelegate (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 211)
   at DryIoc.Container.DryIoc.IResolver.Resolve (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 196)
   at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.ScopedServiceProvider.GetService (Microsoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\ScopedServiceProvider.csMicrosoft.Azure.WebJobs.Script.WebHost, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 25)
   at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService (Microsoft.Extensions.DependencyInjection.Abstractions, Version=3.1.8.0, Culture=neutral, PublicKeyToken=adb9793829ddae60)
   at lambda_method (Anonymously Hosted DynamicMethods Assembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null)
   at Microsoft.Azure.WebJobs.Host.Executors.DefaultJobActivator.CreateInstance (Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\DefaultJobActivator.csMicrosoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 37)
   at Microsoft.Azure.WebJobs.Host.Executors.DefaultJobActivator.CreateInstance (Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\DefaultJobActivator.csMicrosoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 32)
   at Microsoft.Azure.WebJobs.Host.Executors.ActivatorInstanceFactory`1+<>c__DisplayClass1_1.<.ctor>b__0 (Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\ActivatorInstanceFactory.csMicrosoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 20)
   at Microsoft.Azure.WebJobs.Host.Executors.ActivatorInstanceFactory`1.Create (Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\ActivatorInstanceFactory.csMicrosoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 26)
   at Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker`2.CreateInstance (Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionInvoker.csMicrosoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 44)
   at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+ParameterHelper.Initialize (Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 794)
   at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+<TryExecuteAsyncCore>d__16.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35Microsoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.23.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35: 96)

System.ArgumentNullException:
在Repositories.Localization.LocalizationRepository..ctor（Repositories.Localization，Version=1.0.0.0，Culture=neutral，PublicKeyToken=nullRepositories.Localization，Version=1.0.0.0，Culture=neutral，PublicKeyToken=null:D:\a\1\s\Service\Repositories.LocalizationRepositories.csRepositories.Localization，Version=1.0.0.0，Culture=neutral，PublicKeyToken
at lambda_方法（匿名托管DynamicMethods程序集，版本=0.0.0.0，区域性=中立，PublicKeyToken=null）
在DryIoc.Factory+c_uuuu显示器上Class26_0.b_uu2（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）肯=空：6605）
在DryIoc.Scope.TryGetOrAdd（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）肯=空：7849）
在DryIoc.Scope.GetOrAdd（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）肯=空：7834）
在DryIoc.Factory.ApplyReuse（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）肯=空：6604）
在DryIoc.Factory.GetExpressionOrderFault中（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）ken=null:6564）
在DryIoc.ReflectionFactory.CreateExpressionOrderFault中（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）ken=null:7083）
在DryIoc.Factory.GetExpressionOrderFault中（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）肯=空：6554）
在DryIoc.ReflectionFactory.CreateExpressionOrderFault中（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）ken=null:7083）
在DryIoc.Factory.GetExpressionOrderFault中（Microsoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=nullMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyToken=null:D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.csMicrosoft.Azure.WebJobs.Script.WebHost，版本=3.0.0.0，区域性=中性，PublicKeyTo）肯=空：6554）
在DryIoc.Factory.GetDelegateOrDefau