combinatory.linq.cs

        static void Main(string[] args)
        {
            int[] oneToNine = new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

            var query =
                from i1 in oneToNine 
                from i2 in oneToNine 
                from i3 in oneToNine 
                select i1 + (10 * i2) + (100 * i3) ;

            foreach (int n in query.OrderBy(n => n))
            {                
                Console.WriteLine("{0}",n);
            }
        }