public static WorkflowServiceHost CreateWorkflowServiceHost()
        {
            // add the workflow implementation and application endpoint to the host
            WorkflowService service = new WorkflowService()
            {
                Body = PurchaseOrderWorkflow.CreateBody(),

                Endpoints =
                {
                    // adds an application endpoint
                    new System.ServiceModel.Endpoint
                    {
                        Binding = new System.ServiceModel.NetMsmqBinding("NetMsmqBindingTx"),
                        AddressUri = new Uri("net.msmq://localhost/private/ReceiveTx"),
                        ServiceContractName = XName.Get(PurchaseOrderWorkflow.poContractDescription.Name)
                    }
                }
            };
            WorkflowServiceHost workflowServiceHost = new WorkflowServiceHost(service);

            // add the workflow management behaviors
            IServiceBehavior idleBehavior = new WorkflowIdleBehavior { TimeToUnload = TimeSpan.Zero };
            workflowServiceHost.Description.Behaviors.Add(idleBehavior);

            IServiceBehavior workflowUnhandledExceptionBehavior = new WorkflowUnhandledExceptionBehavior()
            {
                Action = WorkflowUnhandledExceptionAction.AbandonAndSuspend // this is also the default
            };
            workflowServiceHost.Description.Behaviors.Add(workflowUnhandledExceptionBehavior);

            // add the instance store
            SqlWorkflowInstanceStoreBehavior instanceStoreBehavior = new SqlWorkflowInstanceStoreBehavior()
            {
                ConnectionString = "Server=localhost\\SQLEXPRESS;Integrated Security=true;Initial Catalog=DefaultSampleStore;"
            };
            workflowServiceHost.Description.Behaviors.Add(instanceStoreBehavior);

            // add a workflow management endpoint
            ServiceEndpoint workflowControlEndpoint = new WorkflowControlEndpoint()
            {
                Binding = new System.ServiceModel.NetNamedPipeBinding(System.ServiceModel.NetNamedPipeSecurityMode.None),
                Address = new System.ServiceModel.EndpointAddress("net.pipe://workflowInstanceControl")
            };
            workflowServiceHost.AddServiceEndpoint(workflowControlEndpoint);

            // add the tracking participant
            workflowServiceHost.WorkflowExtensions.Add(new TrackingListenerConsole());

            foreach (ServiceEndpoint ep in workflowServiceHost.Description.Endpoints)
            {
                Console.WriteLine(ep.Address);
            }

            return workflowServiceHost;
        }
        /// <summary>
        /// Adds the standard behaviors and endpoints to our workflow service host.
        /// </summary>
        /// <param name="workflowServiceHost">The workflow service host.</param>
        private void AddBehaviorsAndEndpoints(WorkflowServiceHost workflowServiceHost) {
            // Check whether we have already initialised the service host
            if (workflowServiceHost.Description.Endpoints.Where(endpoint => endpoint is EnterpriseWorkflowCreationEndpoint).Any()) {
                return;
            }

            // Add endpoints for any services that have been defined in the workflow
            workflowServiceHost.AddDefaultEndpoints();

            ServiceEndpoint firstEndpoint = (from endpoint in workflowServiceHost.Description.Endpoints
                                 where endpoint.IsSystemEndpoint == false
                                 select endpoint).FirstOrDefault();

            BasicHttpBinding binding = new BasicHttpBinding();
            EndpointAddress endpointAddress = new EndpointAddress(workflowServiceHost.BaseAddresses[0]);

            // Add the creation endpoint
            EnterpriseWorkflowCreationEndpoint creationEndpoint = new EnterpriseWorkflowCreationEndpoint(firstEndpoint != null ? firstEndpoint.Binding : binding, firstEndpoint != null ? firstEndpoint.Address : endpointAddress);

            workflowServiceHost.AddServiceEndpoint(creationEndpoint);


            // Add the SQL workflow instance store
            //SqlWorkflowInstanceStore store = new SqlWorkflowInstanceStore("myConnectionString");
            //workflowServiceHost.DurableInstancingOptions.InstanceStore = store;

            // Add the idle behavior
            workflowServiceHost.Description.Behaviors.RemoveAll<WorkflowIdleBehavior>();
            WorkflowIdleBehavior idleBehavior = new WorkflowIdleBehavior {
                TimeToPersist = TimeSpan.FromMilliseconds(10000),
                TimeToUnload = TimeSpan.FromMilliseconds(10000)
            };
            workflowServiceHost.Description.Behaviors.Add(idleBehavior);

            // Add the unhandled exception behavior
            WorkflowUnhandledExceptionBehavior unhandledExceptionBehavior = new WorkflowUnhandledExceptionBehavior {
                Action = WorkflowUnhandledExceptionAction.AbandonAndSuspend
            };
            workflowServiceHost.Description.Behaviors.Add(unhandledExceptionBehavior);

            // Add tracking behavior
            EnterpriseWorkflowTrackingBehavior trackingBehavior = new EnterpriseWorkflowTrackingBehavior();
            workflowServiceHost.Description.Behaviors.Add(trackingBehavior);

            // Add a custom extension
            workflowServiceHost.WorkflowExtensions.Add(() => new WorkflowHostingEnvironmentExtension());

        }