Nearly a year ago I created a CancellationScope Activity sample and posted it on CodeGallery for .NET 4 Beta 1.   I went back yesterday and updated it for .NET 4 RTM – the sample has some interesting points to demonstrate.

It shows how the CancellationScope Activity works but it also shows

  1. How to create a custom activity that causes the workflow to go idle for testing purposes
  2. How to create a unit test that verifies the behavior of a console application by simply verifying the text output to the console.

You can download the sample from http://code.msdn.microsoft.com/wf4CancellationScope

Read more at Ron Jacobs Blog