Even though the Validation Application Block supports extensive composition of validation rules (using And and Or 'operators' and the Negated property) PIAB doesnt. PIAB Matchingrules are always composed using an "AND" operator (Namespace is 'BusinessLogic...
Since Both Tom and Ed wrote an article explaining whatever the Policy Injection Application Block [PIAB] is, you might be interested in how to use this new block from within Enterprise Libraries February CTP . Tom, who is the Product Manager on Enterprise...