C# 如何访问服务中的选项对象。配置<；MyOptions>；在DotNet核心依赖注入中？

我对依赖注射还比较陌生。我有以下代码：

 static void Main(string[] args)
        {
            
            var hostBuilder = new HostBuilder()
               .UseConsoleLifetime()
               .ConfigureServices((hostContext, services) =>
               {
                   services.AddFtpServer(opt => opt.UseDotNetFileSystem()).AddHostedService<HostedFtpService>();
                   services.AddSingleton<IMembershipProvider, CustomMembershipProvider>();
                   services.Configure<FtpServerOptions>(opt => opt.Port = 33999);
                });
            var host = hostBuilder.Build();

            var Item1 = host.Services.GetService<IMembershipProvider>(); //This works, I can get the new CustomMembershipProvider Object
            var Item2 = host.Services.GetService<FtpServerOptions>(); //This does NOT work....


        }

尝试这样做：

var Item2 = host.Services.GetService<IOptions<FtpServerOptions>>(); 

---

酷它的作品，但也有IOptionsMonitor，这可能是一个我需要的。谢谢

var Item2 = host.Services.GetService<IOptions<FtpServerOptions>>(); 

var  options = Item2.Value