Question

I have this interface:

public interface IUserProfileService
{
    // stuff
}

Implemented by:

public class UserProfileService : IUserProfileService
{
    private readonly string m_userName;

    public UserProfileService(string userName)
    {
        m_userName = userName;
    }
}

I need this injected into a controller like this:

public class ProfilesController : BaseController
{
    private readonly IUserProfileService m_profileService;

    public ProfilesController(IUserProfileService profileService)
    {
        m_profileService = profileService;
    }
}

I don’t know how I can register this interface and its implementation into Ninject container so that userName param is passed in when the Ninject inits an instance of this service.

Any ideas how I can achieve this?

Answer 1

One alternative is to inject a factory and create your dependency using Create(string userName).

public class UserProfileServiceFactory
{
    public IUserProfileService Create(string userName)
    {
        return new UserProfileService(userName);
    }
}

It might seem off to have to create another class but the benefits mostly comes when UserProfileService takes in additional dependencies.