static void Main(string[] args) { LinkedList<int> list = new LinkedList<int>(); for (int i = 0; i < 10; i++) { list.Add(new Random().Next(0, 20)); Thread.Sleep(20); } list.AddRange(GetRandEnumerable(10)); foreach (var item in list) { Console.WriteLine(item); } Console.WriteLine(list.Contains(7)); Console.WriteLine(list.Find(7)); list.RemoveOneFirst(7); foreach (var item in list) { Console.WriteLine(item); } Console.ReadKey(); }