.net core在启动时获取DbContext实例，使用DbContext调用服务方法

我已将DbContext连接到数据库。该上下文在启动时配置为依赖项注入

   public static class MyPhotoServiceCollectionExtension
    {
        public static IServiceCollection AddMyPhoto(this IServiceCollection services, IConfiguration configuration)
        {
           
            services.AddDbContext<MyPhotoDbContext>(options =>
            {
                options.UseSqlServer(configuration.GetConnectionString("DefaultConnection"));
            });
                                   
            return services;
        }
    }

我试图在启动时调用AddDataToSearchDocuments（）方法，我只需要执行一次，但它不起作用，因为它需要上下文。你有什么想法吗

我试过了

SearchDataService service=new SearchDataService(MyPhotoDbContext _context)

未给出与“MyPhotoDbContext.MyPhotoDbContext（DbContextOptions）”MyPhoto所需的形式参数“options”相对应的参数

SearchDataService service=new SearchDataService(MyPhotoDbContext _context)

There is no argument given that corresponds to the required formal parameter 'options' of 'MyPhotoDbContext.MyPhotoDbContext(DbContextOptions<MyPhotoDbContext>)'   MyPhoto