[nightski]

It's pretty easy using LinqKit [1]. Just PredicateBuilder.Or() [2]. If you were to try and implement PredicateBuilder yourself that requires a little more knowledge around expressions, but it's worth learning and opens up a lot more possibilities.

[1] https://github.com/scottksmith95/LINQKit [2] http://www.albahari.com/nutshell/predicatebuilder.aspx