Microsoft Windows Workflow Foundation 4.0 Cookbook

Performing compensation by using Compensable activity

Imagine a scenario where we are buying a computer online and money has been deducted from our bank account. Suddenly an unexpected exception occurs, workflow stops, and the purchase gets cancelled. Obviously, such a thing should not happen in real life. If an exception occurs that induces workflow stop, the money should be returned back to our account. In WF4 we can use a Compensable activity to handle such a compensation job.

How to do it...

1. Create a Workflow Console Application project:

   Create a new Workflow Console application project and name it UseCompensableActivity.

2. Create workflow code:

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