具有Ninject的自绑定成员身份提供程序

我正在尝试在ASP.NET MVC 2中自绑定MembershipProvider,然后在AccountController构造函数中使用此绑定。

这是我的global.asax.cs中的一个片段

// selfbind MembershipProvider in request scope
Bind<MembershipProvider>().ToSelf().InRequestScope();

以及服务类中的一个片段:

public AccountMembershipService(MembershipProvider provider, IAccountRepository accountRepository)
{
    _provider = provider ?? Membership.Provider;
    _accountRepository = accountRepository;
}

我的问题是注入不起作用(但AccountRepository的注入起作用)。这是来自ninject的错误:

Error activating MembershipProvider using self-binding of MembershipProvider
No constructor was available to create an instance of the implementation type.
Activation path:
   3. Injection of dependency MembershipProvider into parameter provider of constructor of type AccountMembershipService
   2. Injection of dependency IMembershipService into parameter membershipService of constructor of type AccountController
   1. Request for IController

Suggestions:
 1) Ensure that the implementation type has a public constructor.
 2) If you have implemented the Singleton pattern, use a binding with InSingletonScope() instead.

设置insingletonscope()没有任何区别,我无法对构造函数做任何操作,因为它不是自定义成员身份提供程序,而是ASP.NET附带的默认成员身份提供程序。

我被困在这里,不知道怎么解决这个问题。