I provide ongoing support for my books through my website. You can obtain the source code for all of the examples in Learning C# 3.0 at:

There, you’ll also find access to a book support discussion group that has a section set aside for questions about Learning C# 3.0. Before you post a question, however, please check my website to see whether there is a Frequently Asked Questions (FAQ) list or an errata file. If you check these files and still have a question, please go ahead and post it to the discussion center. The most effective way to get help is to ask a precise question or to create a small program that illustrates your area of concern or confusion, and be sure to mention which edition of the book you have.