C# Distinct List from a List

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LINQ's Distinct() on a particular property 17 answers

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You can either use GroupBy with an anonymous type as a key:

occupancyResultList = occupancyResultList
        .GroupBy(x => new { x.on_date, x.type_code, x.available })
        .Select(g => g.First())
        .ToList();

Or DistinctBy method:

occupancyResultList = occupancyResultList
        .DistinctBy(x => new { x.on_date, x.type_code, x.available })
        .ToList();

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