Hi,Chirper is the first open source non trivial webapp example of .NET/Cassandra integration.
The code source is available under the Apache 2.0 license in github: http://github.com/nakhli/Chirper
Introduction blog post: http://www.javageneration.com/?p=318 Hope you'll find it useful! Cheers -- Chaker Nakhli http://www.javageneration.com