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Asked: 2026-05-16T07:11:33+00:00

I have a list like so: List<string[]> countryList and each element of the string

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I have a list like so:

List<string[]> countryList

and each element of the string array is another array with 3 elements.

So countryList[0] might contain the array: 

new string[3] { "GB", "United Kingdom", "United Kingdom" };

How can I search countryList for a specific array e.g. how to search countryList for

new string[3] { "GB", "United Kingdom", "United Kingdom" }?
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1 Answer

  1. Editorial Team
    return countryList.FirstOrDefault(array => array.SequenceEqual(arrayToCompare));

    To simply establish existence, use countryList.Any.
    To find the index of the element or -1 if it does not exist, use countryList.FindIndex.

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