The NHapi Beginner’s Guide is meant for developers who are taking their first steps in the implementation of HL7 communication with .Net application using NHapi... » 

The NHapi Beginner’s Guide is meant for developers who are taking their first steps in the implementation of HL7 communication with .Net application using NHapi. Since both HL7 and NHapi have a steep learning curve, this guide will help you take the first plunge. Even if you are more experienced working with NHapi this guide is also a reference guide to fall back upon. «