How to check list A contains any value from list B?

Question

List A:

1, 2, 3, 4

List B:

2, 5

How to check if list A contains any value from list B?

e.g. someth

Answer 1

You can check if a list is inside of another list with this

var list1 = new List { 1, 2, 3, 4, 6 };
var list2 = new List { 2, 3 };
bool a = list1.Any(c => list2.Contains(c));