Great book, a little sloppy
Great job on this book. Some terrific examples -- the "try it out" parts are implemented really well. It's great the way you generalize the detail on the instructions as the book progresses, forcing the reader to remember what they learned before -- nice touch. I teach beginning ASP.NET and I've decided to use this book in my course.
If I had one complaint it's that the book could have used a bit more proofreading. There are numerous examples of places where the instructions say something like "EmptyRowText" when the property is actually called "EmptyDataText" (from page 159, instruction #3). (Could that be because I'm using VS2005 Pro instead of VWD Express?)
It's not a huge problem, and I expect typos in a new book, but I do want to add a plea for a more comprehensive errata sheet, especially since this book is specifically oriented towards beginners. :)