Windows Workflow Foundation (WF) offers rules capabilities to the WinFx developer platform. RuleSets are collection of business rules with conditions and actions and they can be executed on any target object such as a Windows Form. In this sample we will demonstrate this capability by using rulesets to pre-populate fields, do cross validation and various calculations on a target Windows Form. We will also show rules features such as forward chaining in this sample. This example is based on the Beta 2.2 installation of Windows Workflow Foundation.