Temp

        static object CreateWorkerAppDomainWithHost(string virtualPath, string physicalPath, Type hostType)
        {
            string uniqueAppString = string.Concat(virtualPath, physicalPath).ToLowerInvariant();
            string appId = (uniqueAppString.GetHashCode()).ToString("x", CultureInfo.InvariantCulture);
            ApplicationManager appManager = ApplicationManager.GetApplicationManager();
            Type buildManagerHostType = typeof(HttpRuntime).Assembly.GetType("System.Web.Compilation.BuildManagerHost");
            var buildManagerHost = appManager.CreateObject(appId, buildManagerHostType, virtualPath, physicalPath, false);
            buildManagerHostType.InvokeMember("RegisterAssembly",
                BindingFlags.Instance | BindingFlags.InvokeMethod | BindingFlags.NonPublic,
                null,
                buildManagerHost,
                new object[2] { hostType.Assembly.FullName, hostType.Assembly.Location });
            return appManager.CreateObject(appId, hostType, virtualPath, physicalPath, false);
        }