Is it possible to use the selfvalidation attribute with my validations located in a metadatatype? I'm using Enterprise Library 5's Validation Application Block.
As I explained in my other answer, this isn't supported out of the box. However, this can be achieved by hooking into the framework using depedency injection and replace the existing AttributeValidatorFactory
implementation. I written a post on my weblog on how to do this: Mixing Validation Application Block With DataAnnotation: What About SelfValidation?
I hope this helps.