Select items from List A where the property is not in List B

Question

I have a List<Broadcast> and the Broadcast object has a property called Guid. Now I need to find all Broadcast objects in that list whose Guid property is not an item in List<Guid>. I've found a solution with Except(); but it's not working for me.

Broadcasts.Where(x => x.Guid).Except(readBroadcasts);

What am I doing wrong?

Answer 1

Here is a way you can do it :

List<Guid> excludeGuid = ..... // You init guids you want to exclude
List<Broadcast> result = Broadcasts.Where(x => !excludeGuid.Contains(x.Guid)).ToList() ;