LINQ to Entities - where..in clause with multiple columns

Question

I\'m trying to query data of the form with LINQ-to-EF:

class Location {
    string Country;
    string City;
    string Address;
    …
}

by

Answer 1

I don't think that will work for you since when you are newing up an object in the Contains method it will create a new object each time. Since those object are anonymous the way they will be compared are against their reference which will be different for each object.

Also, look at Jacek's answer.