Ninject bound CustomMembershipProvider not calling Initialize method

I have cr开发者_运维技巧eated a custom membership provider that takes an instance of IUsersRepository in it's constructor.

private IUsersRepository usersRepository;
public CustomMembershipProvider(IUsersRepository usersRepository)
{
     this.usersRepository = usersRepository;
}

This dependency is bound using Ninject

Bind<IUsersRepository>().To<SqlUsersRepository>().WithConstructorArgument("connectionString", ConfigurationManager.ConnectionStrings["AppDb"].ConnectionString);
Bind<MembershipProvider>().To<CustomMembershipProvider>();

and used in my AccountController like so

CustomMembershipProvider provider;

public AccountController(MembershipProvider membershipProvider)
{
     this.provider = (CustomMembershipProvider)membershipProvider;
}

[HttpPost]
public ActionResult Register(User user)
{
    MembershipCreateStatus status = new MembershipCreateStatus();
    provider.CreateUser(user.FirstName, user.LastName, user.Email, user.Password, out status);

    return View(user);
}

The problem with this is that when CustomMembershipProvider is instantiated the Initialize method is not called and thus my modified Web.Config is not read.

As a side to this, I've noticed that CustomMembershipProvider is being instantiated twice - the first time as I explained above, and then again when my [HttpPost] action method is called. The second time it's instantiated using a parameterless constructor and it calls the Initialize method. I don't know what happens to the second CustomMembershipProvider as provider.CreateUser() uses my un-Initialized CustomMembershipProvider.

I hope I've explained this well enough, any help would be appreciated.

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I can't tell if you're using the Ninject.Mvc3 extension (which you probably should), but that will allow you to have a single instance of your MembershipProvider per web request. You'll have to do the binding like so:

Bind<MembershipProvider>().To<CustomMembershipProvider>().InRequestScope();

If you want to return the same instance every time you can use InSingletonScope.

Accessing web.config is not possible at the time bindings tend to be done in Mvc apps, but I usually get around that by having a custom configuration section and binding that to a method. By doing that the method will not get evaluated until the kernel is asked for a configuration section, and at that time web.config can be accessed. Something similar might work for your connection string.

Bind<MyConfigurationSection>().ToMethod(context => (MyConfigurationSection)ConfigurationManager.GetSection("mysection")).InSingletonScope();

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Public Class SomeRolProvider
    Inherits RoleProvider
    Implements IProvider

    'this service needs to get initialized
    <Inject()>
    Public Property _memberhip As IMemberschipService


    Sub New()
        'only this constructor is called
    End Sub



Protected Overrides Function CreateKernel() As Ninject.IKernel
            Dim modules = New NinjectModule() {New Anipmodule()}

            Dim kernel = New StandardKernel(modules)
            kernel.Inject(Roles.Provider)
            kernel.Inject(Membership.Provider)
            Return kernel
        End Function

This will force the kernel to bind properties of the memberschip provider

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Thanks for everybody's help on this question. I was unable to find a solution that would work well for this applications situation without the need for masses of code.

To get around the issue I looked at the default MVC 2 project and copied some of Microsoft's code. My project is probably not very testable but I needed a quick solution. I've set it up so that if I do have time to find a solution in the future, I'll be able to replace it with the current code.