I have used the Formview with an object datasource control a lot. It handles mode changes automatically. My question is with the code in the ASP.net 3.5 Enterprise Application Development text. It seems easy to use the linq datasource control with a formview. However, this seems to break the main UI, BLL, DAL project structure this text teaches. What is the best way to handle a Formview that needs to perform read/edit/insert and delete?