var list = new List<int>(10);
            for (int i = 0; i < 10; i++) list.Add(i);

            var randomizedList = new List<int>();
            var rnd = new Random();
            while (list.Count != 0)
            {
                var index = rnd.Next(0, list.Count); // <-------------
                randomizedList.Add(list[index]);
                list.RemoveAt(index);
            }
            for (int i = 0; i < 10; i++) Console.WriteLine("{0}", randomizedList[i]);