IDataErrorInfo vs IValidatableObject?

Question

Currently my business objects implement IDataErrorInfo. Since I intend to use these libraries in ASP.NET MVC 3, I figure I should implement IValidatableOb

Answer 1

I am implementing IValidatableObject at entity, wrapping it with IDataErrorInfo at view model (automatically via base class) for WPF. My entities will work well in either WPF, MVC and new EF CTP5 who also honors IValidatableObject.