System.web.Mvc DependencyResolver not able to create object for generic classes

Question

I am trying to use dependencyinjection in Controller and using System.Web.MvcDependencyResolver.Current.GetService() for creating service instances in controller class.

This works fine when Service Interfaces are non generic as below

public interface IProfileManagementService
{
   IList<News> GetSavedSearchList(int userObjectId, ApplicationType applicationType,int? vendorUserObjectId);
}

and my dependency resolver syntax as below gives me instance of ProfileManagementService

DependencyResolver.Current.GetService<IProfileManagementService>();

But If I create any generic service interface as below,

public interface ICommonProfileManagementService<T>
{
   IList<T> GetSavedSearchList(int userObjectId, ApplicationType applicationType,int? vendorUserObjectId);
}

But I get a null (CommonProfileManagementService objects are not created) for below code

DependencyResolver.Current.GetService<ICommonProfileManagementService<News>>();

Please Suggest some alternate ways of passing

IService<T>

instead of

IService

to DependencyResolver.Current.GetService()

Answer 1

Here is the full code including the syntax needed to return a generic from DependencyResolver.

using Microsoft.Practices.Unity;
using System;
using System.Collections.Generic;
using System.Web.Mvc;
using Microsoft.Practices.Unity.Mvc;

namespace ConsoleApplication2
{
    class Program
    {
        public interface IService<T>
        {
            List<T> GetService();
        }

        public class Service<T> : IService<T>
        {
            public List<T> GetService()
            {
                return new List<T>();
            }
        }

        static void Main(string[] args)
        {
            var container = new UnityContainer();

            container.RegisterType(typeof(IService<>), typeof(Service<>));

            DependencyResolver.SetResolver(new UnityDependencyResolver(container));

            var service = DependencyResolver.Current.GetService(typeof(IService<string>));

            Console.WriteLine(service.ToString());

            Console.ReadKey();
        }
    }
}