Data Annotations for validation, at least one required field?

Question

If I have a search object with a list of fields, can I, using the System.ComponentModel.DataAnnotations namespace, set it up to validate that at least one of the fields in t

Answer 1

If you want to do complex validation against any .Net class, without litering them with annotations, look at FluentValidation, or for .Net 2.0, FluentValidation for 2.0