1.
ASP.NET 2.0 Unleashed (This can be regarded as the REFERENCE MANUAL)
By Stephen Walther.
http://www.samspublishing.com/bookstore/product.asp?isbn=0672328232&rl=1
ASP.NET 2.0 Unleashed is a revision of the best-selling ASP.NET Unleashed, by Microsoft Software Legend Stephen Walther. It covers virtually all features of ASP.NET 2.0 including more than 50 new controls, personalization, master pages, and web parts. All code samples are presented in VB and C#. Throughout the more than 2,000 pages, you will be shown how to develop state-of-the-art Web applications using Microsoft's latest development tools. This resource is guaranteed to be used as a reference guide over and over!
2.
ASP.NET 2.0 Illustrated (This can be regarded as the TUTORIAL)
By Alex Homer, Dave Sussman.
http://www.awprofessional.com/bookstore/product.asp?isbn=0321418344&rl=1
Developers moving to ASP.NET 2.0, the breakthrough Web development environment from Microsoft, will want to learn how to take full advantage of the new features that make this the most productive and powerful Web development environment ever. ASP.NET 2.0 Illustrated teaches developers exactly what they need to know to create exciting Web sites and applications quickly and easily using ASP.NET 2.0.
Renowned authors, developers, and conference speakers Alex Homer and Dave Sussman have written a concise, detailed exploration of the "must learn" features of ASP.NET 2.0. The book's many original examples, fully updated for the release version of ASP.NET 2.0, are all downloadable from the authors' Web site, and many can be run live online.