Ejemplos de Feeds.GroupBy en C# (CSharp)

Ejemplo n.º 1

        private bool IsNamesNotUniqueRule(out IEnumerable <string> invalidNames)
        {
            var names = new List <string>();

            var groups = Feeds.GroupBy(x => x.Name).Where(g => g.Count() > 1).ToList();

            groups.ForEach(g => names.Add(g.Key));

            invalidNames = names;

            return(groups.Any());
        }