How can we check whether one array contains one or more elements of another array in #?

Here is a Linq solution that should give you what you need:

names.Any(x => subnames.Contains(x))

The absolute simplest way would be to use the Enumerable.Intersect method. Then us the Any method on the result

bool containsValues = names.Intersect(subnames).Any();

This will work too:

bool result = names.Any(subnames.Contains);

EDIT

This code may look incomplete but it actually works (method group approach).

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