A sample for Windows Workflow Foundation (WF) that shows how to use Windows Communication Foundation (WCF) for messaging. Sample code for Windows Workflow Foundation showing WCF integration in an Expense Reporting sample

Download form: http://www.microsoft.com/downloads/details.aspx?familyid=E14FC2E4-A29C-4203-9C71-D19E6FC42BF3&mg_id=10104&displaylang=en

See http://www.codeplex.com/WCFWorkflow for another set of activities created by MarcelDeVries.