Nice collection of samlple code for Visual Studio 2005 both in C# an VB.Net. http://msdn.microsoft.com/vstudio/downloads/101samples/default.aspx. The samples include:

• Changing ACL (Access Control Lists) on files

• Console Enhancements including buffer control, simple animations and colors

• Downloading files using FTP (File Transfer Protocol)

• Network Programming including PING, UDP, and TCP network statistics

• Using the new Stopwatch class to measure time

• Compressing and decompressing files in the GZip format

• Retrieving Drive Information

• Using Generic Collections

• Creating Regular Expressions to parse text

• Building a tracing infrastructure to track errors and application performance

• Controlling cache policies with the new System.Net.Cache namespace

• Creating a process viewer

• Creating a Windows service manager

• Using the data protection API

• Encrypting and decrypting data

• Using platform invoke to access legacy or unmanaged code from within managed code

• Building in support for localization

• Using the NGEN utility

• Using the new SecureString class

• Using new socket class methods

• Using serial ports with the new Port class

• Working with the file system

• Working with threads to manage multiple tasks simultaneously

• Building a simple web server with HTTPListener

And a lot more, check it out!