.netTiers + CodeSmith

.netTiers are a set of templates written in C# and is built to work with the CodeSmith template code generation platform. CodeSmith itself uses a familiar ASP.NET syntax so .netTiers is not written in any obscure language or syntax that you couldn't sit down and understand what's going on in a very short time. The power of .netTiers is that it is a templatized approach to a common problem, and does not prohibit you from changing things or knowing what is going on under the covers.

http://nettiers.com/