Explicitly delete records by calling the Delete method. There are methods to delete by object, by primary key, by passed parameters. To do a delete of the object with the children, see Deleting with Children.
//Get the current instance of the helper
IDataHelper db = DataHelper.SessionFactory();
//Create a new Person to save to the database
Person currentPerson = new Person();currentPerson.FirstName =
"John";currentPerson.LastName =
"Smith";
//Save it to the database
db.Save(currentPerson);
//Delete the record in the database
db.Delete(currentPerson);