如何导入HL7血液结果并将其解析为患者报告？

I am developing a medical application using C# and ASP.NET and in this application I need to make a module for patient blood results. In that module I need to import HL7 and then parse it to get patient blood result and also I need to highlight normal values for that blood test. I have no idea how to do this I searched on Google but unfortunately I did not get anything relevant to my interest. I got some dlls like one is NHAPI i got its DLL files but I do not know how to use that. can any one give me a link to the example code that how I should start this module.I am developing a medical application using C#