.NET
ASP.NET: The official Microsoft ASP.NET site.
Borland C# Builder™ Developer Resources: Site for Borland C#Builder developers.
C# Corner: Site for C# and .NET developers.
Certificate Issues
- ClickOnce Certificates Expire and Wreaks Havoc: An article on ClickOnce certificate issue.
- Certificate Solution: Source code to fix said certificate issue.
- Solution to Certificate Solution: A solution for Microsoft's solution.
4 Guys From Rolla.com™: Site for ASP.NET forums, examples and articles.
Code Guru: Site for sharing articles, ideas, code, etc.
The Code Project: Site for free C++, C# and .NET articles, code snippets, discussions, and news.
CodePlex Foundationr: A non-profit foundation formed with the mission of enabling the exchange of code and understanding among software companies and open source communities. This site is sponsered by Microsoft.
.NET 247: Matthew Reynolds' .NET 247™.
Developing High-Performance ASP.NET Applications: Detailed guide from Microsoft on optimizing ASP.NET web pages.
Six C# Features...: Article titled Six C# features Java developers will kill for...
Windows Forms .NET: Official Microsoft Windows Forms community site.
Working with Frames: An excellent article titled Working with Frames in .NET