A few minutes ago I made all the code samples for Programming Microsoft Visual Basic 2005: The Language available on the book home page. It's a 7.5M download that contains several thousand lines of carefully crafted, optimized, reusable source code, including the following:
- a VB class that works with fractions
- a base form for simplified data entry
- a class to cache text files
- several custom iterators for better For Each loops
- tons of examples with generics
- two expression evaluators, the former built on regexes, the latter implemented via on-the-fly compilation
- a utility to display project statistics (a demo for regexes)
- a RegexTester stand-alone utility, to help you build, test and compile regular expressions
- an example of custom provider for My.Settings
- an example of how you can intercept ANY event from ANY set of Windows Forms controls
- attribute-based benchmarks
- a complete infrastructure for writing Windows Forms plug-ins
- an attribute-based library to write data-centric N-tier applications
- several Visual Studio macros
- Visual Studio visualizers for files, regex, and images
- .... and a lot more
On the same page you can also find an errata document for typos and mistakes found after the book went to print.
Enjoy the code (and buy the book if you like it! 
)