Just new: Policy Inyection Application Block
Do you wonder how to apply authorization, validation, logging and other requierements to you business objects with modifying the underlying code ?
Tom Hollander just published an exciting new block for EntLib 3.0:
http://blogs.msdn.com/tomholl/archive/2007/02/23/announcing-the-policy-injection-application-block.aspx
An Ed provides more details:
http://blogs.msdn.com/edjez/archive/2007/02/23/policy-injection-app-block-behind-the-scenes.aspx