Some C# links and resources that I have used to integrate data from a MS SQL Server to a web site that runs ColdFusion using web services on the ColdFusion side.
The archived #develop forums - thousands of posts that weren't migrated to their current forums:
http://www.icsharpcode.net/OpenSource/SD/forum/search.asp
An article on creating or consuming web services in dotnet
http://aspnet.4guysfromrolla.com/articles/100803-1.aspx
A real example of consuming a web service with csharp (including downloadable visual studio project files and full source code - extremely useful to a neophyte)
http://www.codeproject.com/cs/webservices/cpwebserviceconsumer.asp
Instructions on creating the web reference in SharpDevelop
http://community.sharpdevelop.net/blogs/mattward/archive/2005/12/31/WebReferences.aspx
Finally, informit.com offers the "Learn Csharp in 24 hours" book. Pretty OK.
http://www.informit.com/library/library.asp?b=STY_Csharp_24hours
Some articles on C# itself
C# XML notes:
Tags: CSharp, SharpDevelop, dotnet, .net, webservice, soap, wsdl