Adding Local service in WF

There are two ways to add local service to workflow runtime, programatically or declaratively. Below is section of code that do it programatically.

            private static void AddServices(WorkflowRuntime instance)
            {
            //add the external data exchange service to the runtime
            ExternalDataExchangeService exchangeService
            = new ExternalDataExchangeService();
            instance.AddService(exchangeService);

            //add our custom local service
            //to the external data exchange service
            exchangeService.AddService(new AccountService());
            }

            

Or you can do it using config file. Below is section of the configuration file.