Fluent NHibernate “Could not resolve property”
So this error comes when your n-hibernate query is not proper sql query. For example your query is var riAlbum = session . QueryOver < Album >() . Where ( x => x . Name == albumName && x . Artist . Name == artist ) . List (). FirstOrDefault (); this query will convert into sql as below select Album .* from Album where Album . Name = 'SomeAlbumName' and Album . Artist . Name = 'SomeArtistName' so that is wrong as last line 'Album.Artist.Name' is not proper sql. so u have to apply join in your n-hibernate query. var riAlbum = session . QueryOver < Album >() . Where ( a => a . Name == albumName ) . JoinQueryOver ( a => a . Artist ) . Where ( ar => ar . Name == artistName ) . List () . FirstOrDefault ();