2013-10-10 代码笔记

```cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            Console.WriteLine("1380094216 = {0}", new DateTime(((long)(1380094216) * (long)(10000000)), DateTimeKind.Utc).ToLocalTime().AddYears(1969));

            Console.WriteLine(Convert.ToDateTime("1970-1-1 00:00:00").Ticks / 10000000);//Ticks为百纳秒数，Sticks/10000000是毫秒数



            var list = Enumerable.Range(1, 7);



            foreach (var item in list)

            {

                Console.Write("{0}\t", item);

            }

            

            var arr = list.ToArray();

            var result = new int[6];

   

            for (int i = 0; i < result.Length; i++)

            {

                result[i] = new Random(i).Next(1, 7);

            }



            Console.WriteLine("\n-------------------------------");



            for (int i = 0; i < result.Length; i++)

            {

                Console.Write("{0}\t", result[i]);

            }

            Console.WriteLine("\n-------------------------------");

            var query = Enumerable.Range(1, 7).OrderBy(x => Guid.NewGuid());

            var seq = Enumerable.Range(1, 7).OrderBy(x => Guid.NewGuid()).Take(6);

            foreach (var item in seq)

            {

                Console.Write("{0}\t", item);

            }



            Console.WriteLine("\n-------------------------------");



            var query2 = from x in arr



                    from y in arr



                    where y > x



                    select string.Format("{0}{1}", x, y);



            foreach (string item in query2)

            {

                Console.WriteLine(item);

            }



            Console.WriteLine("\n-------------------------------");



            var query3 = from x in arr



                         from y in arr



                         where y < x



                         select string.Format("{0}{1}", x, y);



            foreach (string item in query3)

            {

                Console.WriteLine(item);

            }



            Console.ReadKey(true);

            

        }

    }

}





```