After reading through Chapter 6, I don't see Vince used any standard ASP.NET controls (Gridview, drop-drown list). Is there a reason to use a custom girdview instead of a standard one?

If I would like to use a standard gridview control and drop-down list, how would I bind/submit data using Datacontext and entity objects?

Let's say I have a gridview. I want to put a checkbox for Approval and Reject for each entry. After several unsuccefull tries, I could not make the standard ASP.NET gridview working. How can I acomplish this task with using the custom grid view described in the textbook?

Please help me or give me some hints. Thank you very much!