Easier way to "is not in" in dynamic linq language?

Question

I have an array of strings and an IQueryable (called MyTypeQbl).

I want to iterate through the strings in the array which do not have a corresponding MyType.MyString.

I thought this would be:

foreach (string str in stringsArr.Where(s => MyTypeQbl.Count(m => m.MyString == s) == 0))

But is this just more complex than it should be? Is there an easier way to represent this?

The mental loop I'm stuck in is that I'm trying to find strings in a string array which do not match a property inside objects in an IQueryable!

Answer 1

foreach (string str in
    stringsArr.Where(s => !MyTypeQbl.Any(m => m.MyString == s)))