Microsoft Windows Workflow Foundation 4.0 Cookbook

Receiving and replying to a WCF message in code workflow

In this task, we will create a code workflow with Receive and SendReply activities, and will run the workflow as a WCF service. This workflow will accept two integer numbers and return the addition sum to the caller. This workflow is hosted in a console application rather than IIS. We will use WCF Test Client to test the service.

How to do it...

1. Create a workflow Console Application project:

   Create a new Workflow Console Application named ReceiveAndReplyInCode.

2. Create the workflow in code:

   Add a new class file to the project and name it ReceiveAndReplyWorkflow.cs. Fill the file with the following code:

   using System; using System.ServiceModel.Activities; using System.Activities; using System.ServiceModel; ...