I have entities in my database that I want to return all objects into a list that meet criteria determines by the user. Lets say theres 10 properties I want the user to be able to put criteria in for... I obviously don't write all possible permutations of those search criteria... How do I use EF to pass a partially completed object and find all entities who have matching properties? If some of this properties are ints and bools, I would imagine I would have to create a version of that class and change them to int? and bool? so it doesn't look for 0's and Falses if no criteria is put in the search field?