So far there are various Validation FW around the .NET (2 of them here in CodePlex).
Many of them has a very similar API to validate an instance or a property value.
I think that is the moment to create a CommonValidator library containing a shared inteface to work with validation FWs and various implementation.
In practice the same concept used to create CommonServiceLocator.
In one app I wrote a CommonValidator interface to switch between VAB and NHV. In the "S#arp Architecture" project Billy wrote his own CommonValidator interface to switch between VAB and NHV; sometimes is the moment that we (validators team memebrs)
work together to find a condivisible solution.
If the VAB team is available, we can work toghether and we can collaborate with others teams to find a common solution.
The question is:
Can we work together to define a CommonValidator library ?