[yakuzaemme]

class MittProgram
    {
        static Random Rand = new Random();
        static List<String> Sliders = new List<String>();
        static void Main(string[] args)
        {
            AddSliders();
            String MyHTML = SliderHTML();
        }

        static void AddSliders()
        {
            for (Int32 x = 0; x < 10; x++)
            {
                String Current = String.Empty;
                for (Int32 i = 0; i < 5; i++)
                {
                    Int32 Num = Rand.Next(1, 6);
                    while (Current.Contains(Num.ToString()))
                    {
                        Num = Rand.Next(1, 6);
                    }
                    Current += Num.ToString();
                }
                Sliders.Add(Current);
            }
        }
        static String SliderHTML()
        {
            String sHTML = String.Empty;
            foreach (String slider in Sliders)
                sHTML += "<a href='#'><img src='Images/Sliders/" + slider + ".jpg'/></a>";
            return sHTML;
        }
    }

.