CRM_EasyUI_Core/UnityDependencyResolver.cs

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

namespace GroupThink.CRM.Core
{
    public class UnityDependencyResolver : IDependencyResolver
    {
        private const string HttpContextKey = "perRequestContainer";

        private readonly IUnityContainer _container;

        public UnityDependencyResolver(IUnityContainer container)
        {
            _container = container;
        }

        public object GetService(Type serviceType)
        {
            if (typeof(IController).IsAssignableFrom(serviceType))
            {
                return ChildContainer.Resolve(serviceType);
            }

            return IsRegistered(serviceType) ? ChildContainer.Resolve(serviceType) : null;            
        }

        public IEnumerable<object> GetServices(Type serviceType)
        {
            if (IsRegistered(serviceType))
            {
                yield return ChildContainer.Resolve(serviceType);
            }

            foreach (var service in ChildContainer.ResolveAll(serviceType))
            {
                yield return service;
            }
        }

        protected IUnityContainer ChildContainer
        {
            get
            {
                var childContainer = HttpContext.Current.Items[HttpContextKey] as IUnityContainer;

                if (childContainer == null)
                {
                    HttpContext.Current.Items[HttpContextKey] = childContainer = _container.CreateChildContainer();
                }

                return childContainer;
            }
        }        

        public static void DisposeOfChildContainer()
        {
            var childContainer = HttpContext.Current.Items[HttpContextKey] as IUnityContainer;