LinqToLucene

Lucene is an Information Retrieval System used for full-text searching and scoring results commonly referred to as a search engine (similar to google-type-searching). LINQ is Microsoft's extensible Language Integrated Query platform that provides querying directly in a managed CLR. LINQ comes out of the box with LINQ to Objects, LINQ to DataSets, LINQ to XML, LINQ to SQL and LINQ to Entities. The goal of LINQ to Lucene is to provide developers with the ability to enjoy full-text searching using a fast-proven search-engine within the .Net managed CLR.

LINQ & Lambda, Part 4: Lucene.Net

Extended coding example using Lucene.NET.