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Asked: May 10, 20262026-05-10T23:40:22+00:00 2026-05-10T23:40:22+00:00

I am getting back a string[] from a 3rd party library. I want to

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I am getting back a ‘string[]’ from a 3rd party library. I want to do a contains on it. what is the most efficient way of doing this?

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  1. 2026-05-10T23:40:22+00:00Added an answer on May 10, 2026 at 11:40 pm

    Array.IndexOf:

    bool contains = Array.IndexOf(arr, value) >= 0; 

    Or just use LINQ:

    bool contains = arr.Contains(value); 

    LINQ should be ‘fast enough’ for most purposes.

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