Lucene.NET is an exact port to the original Lucene search engine library that is written in C#. It provides a framework (APIs) for creating applications in a full text search. You can add more power to your existing search in your ASP.NET web application or website.
Any sarch function is made up of two easy steps, index the text and to search the text. Lucene.NEt does it both. This article describes how to use Lucene.NET to add a full text search in your ASP.NET applications.
Read the rest of the post here:Â http://www.codeguru.com/csharp/.net/net_asp/article.php/c16869/Introduction-to-LuceneNet.htm