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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string hoge = "./hoge.txt";
            string hage = "./hage.txt";
            //Console.Write("Start " + hoge + " MoveTo" + hoge + ".wk");
            //Console.ReadLine();

            System.IO.FileInfo f1 = new System.IO.FileInfo(hoge);
            f1.MoveTo(hoge + ".wk");

            //Console.Write("Start " + hage + " MoveTo" + hoge);
            //Console.ReadLine();
            // while (true)
            // if (System.IO.File.Exists(hoge) == false) break;
            System.IO.FileInfo f2 = new System.IO.FileInfo(hage);
            f2.MoveTo(hoge);

            //Console.Write("Delete " + hoge + ".wk");
            //Console.ReadLine();

            System.IO.FileInfo f3 = new System.IO.FileInfo(hoge + ".wk");
            f3.Delete();

            Console.Write("Exit");
            Console.ReadLine();
        }
    }
}