Linq Except considering only one property

Question

I have two lists of object.

List obj1 = new List();

List obj2 = new List(); 

I

Answer 1

The Except method requires that the two collection types involved have the same element type. In this case the element types are different (object1 and object2) hence Except isn't really an option. A better method to use here is Where

obj2 = obj2
  .Where(x => !obj1.Any(y => y.StringProperty == x.StringProperty))
  .ToList();