Unity.MVC4 lazy is not working in ASP.NET MVC app

Question

I am using ASP.NET MVC 4 application.

Home controller’s constructor is parameterized with 2 parameter(Iservice1 service1, Iservice2 service2) Not all the code path u

Answer 1

Since I don't know how exactly to implement the lazy loading on DI registration level, I'm often using this way to lazy load services. I would share my approach with you.

Each service interface will inherit the IService interface which is base for all service interfaces.

public interface IService
{
    // I just want to be sure I'm instantiating ONLY services types.
    // This is my base interface 
}

public interface IMyService : IService
{
    void DoSomeWork();
}

Then, every service will implement his own interface:

public class MyService : IMyService
{
    public void DoSomeWork()
    {
        // Some action performed.
    }
}

My abstract BaseController class implements this logic

public abstract class BaseController : Controller
{
    public T LoadService() where T : IService
    {
        return (T)System.Web.Http.GlobalConfiguration.Configuration.DependencyResolver.GetService(typeof(T));
    }
}

And finally, in my controller which inherits the BaseController I would be able to do this:

public class TestController : BaseController
{
    // Only parameterless constructor exists created by the compiler.

    [HttpPost]
    public ActionResult PerformWork()
    {
        var testService = LoadService();
        testService.DoSomeWork();

        return View();
    }
}

I'm curious to see better implementations for lazy loading services or get to know how to implement lazy loading on types registration level using Unity or Ninject.