Asp.net core 3.1选项模式不调用我的委托

on microsoft docs 和 here .

在这里,我注册了用于配置选项的操作

public static class MyServiceCollectionExtensions
{
    public static IServiceCollection AddMyService(this IServiceCollection services, Action<MyOptions> setupAction)
    {
        //Add services required for using options
        services.AddOptions();

        //Add services for our options
        services.AddSingleton<IMyOptions, MyOptions>();

        services.Configure<MyOptions>(setupAction);

        return services;
    }
}

public void ConfigureServices(IServiceCollection services)
{
    services.AddMyService(options =>
    {
        ...
    });
    services.AddMvc(options =>
    {
        ...
    })
}