basicunity.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Practices.Unity;

namespace DiWithUnity
{
    class Program
    {
        static void Main(string[] args)
        {
            var container = new UnityContainer();
            container.RegisterType<Periodical<SomeState>, Book<SomeState>>();

            var thing = container.Resolve<Periodical<SomeState>>();

            Console.WriteLine(thing.DoSomething());
            Console.WriteLine(thing.ConcreteMessage());
        }
    }

    public abstract class Periodical<T> where T : new()
    {
        private T GenericInner;

        protected Periodical()
        {
            GenericInner = new T();
        }

        public string ConcreteMessage()
        {
            return "Base handled this " + GenericInner.ToString();
        }


        public abstract string DoSomething();
    }

    public class Book<T> : Periodical<T> where T: new()
    {
        public Book():base()
        {
        }

        public override string DoSomething()
        {
            return "From the Concrete Class";
        }

       
    }

    public class SomeState
    {
        public override string ToString()
        {
            return "This is from the type parameter";
        }
    }
}