using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using

namespace 文件使用
{
    class Program
    {
        public static void Main()
        {
            string[] CLA = Environment.GetCommandLineArgs();
            Console.WriteLine(CLA[0]);
              if (CLA.Length < 3)
             {
               Console.WriteLine("Format:{0} orig-file new-file",CLA[0]);

            }
            else {
          string origfile;
            origfile = CLA[1];
            string newfile;
            newfile = CLA[2];
   try
              {
                  File.Copy(origfile, newfile );
              }
              catch () { Console.WriteLine("{0}dose not exist", origfile);
              return;
              }
              catch (Exception e) { Console.WriteLine("An exception was thrown trying to copy file.");
              return;
              }


          Console.WriteLine("Copy...");

            }

           
       Console.WriteLine(".....Done");
        }
    }
}