This page is specific to Microsoft Visual Studio 2005/.NET Framework 2.0

Guidelines 
http://msdn2.microsoft.com/en-us/library/ms184410(vs.80).aspx
Design Guidelines for Developing Class Libraries 
http://msdn2.microsoft.com/en-us/library/ms229042(vs.80).aspx

Best Practices 
http://msdn2.microsoft.com/en-us/library/ms184411(vs.80).aspx

Guidelines and Best Practices 

http://msdn2.microsoft.com/en-us/library/ms184412(vs.80).aspx

Other resources:

http://weblogs.asp.net/lhunt/pages/CSharp-Coding-Standards-document.aspxhttp://blogs.msdn.com/ericgu/archive/2004/01/19/60315.aspx

http://www.csharpfriends.com/Articles/getArticle.aspx?articleID=336