namespace ConsoleApplication2 {   class Program   {          static void Main(string[] args)     {       List<int> list = new List<int>();       Random ran = new Random();               while(true)       {         if (list.Count >= 100)         {           break;         }         int s = ran.Next(1, 101);         if (!list.Contains(s))         {           list.Add(s);         }       }        list.Sort();        foreach (int i in list)       {         Console.Write(i + " ");       }       Console.ReadKey();     }   } }