The IStructuralEquatable Interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering. Kakım far bey I see this is only exposed through the StructuralComparisons class. The only way I gönül figure out to make this useful is to make a StructuralEqualityComparer https://cobjectkullanm29516.hamachiwiki.com/796137/değil_hakkında_detaylar_bilinen_c_istructuralcomparable_kullanımı