The declarative rule conditions we've seen in the previous sections only return a value of true or false. A condition doesn't modify a workflow. A rule, on the other hand, is both a condition and a set of actions in an if-then-else form. The
Rule class in Windows Workflow represents this if-then-else concept. The class diagram in the following screenshot displays classes with important relationships to the
The first concept to notice is that the
RuleSet class manages a collection of rules. The
Policy activity will use the
Execute method of a
RuleSet to process the rule collection. We will cover the
Policy activity ...