vb.net Obtenha um item duplo na list OSF String
Dim duplicates = list.GroupBy(Function(x) x).Where(Function(x) x.Count > 1).Select(Function(x) x.Key)
Cautious Cowfish
Dim duplicates = list.GroupBy(Function(x) x).Where(Function(x) x.Count > 1).Select(Function(x) x.Key)