How do i say is not, is not

Question

i don't want to say:

(trsaz != v1) && (trsaz != v2) && ...

i want something like:

trsaz != (v1, v4, v7, v11)

Is this possible or is there also something else besides !=.

Answer 1

var badList = new[] { v1, v4, v7, v11 };
var result = !badList.Contains(trsaz);

Answer 2

var excludeList = new[] { "v1", "v4", "v7", "v11" };
if(!excludeList.Contains(trsaz))
{
    ...
}