using System;using System.Collections.Generic;using System.Text;using System.Text;using System.IO; namespace _5_6{    class Program    {        public const string TO_FILE = @"E:\c#\c#_net\15_6\test.txt";        public const string COPY_TO_FILE = @"E:\c#\c#_net\15_6\test2.txt";        public const string MOVE_TO_FILE = @"E:\c#\c#_net\15_6\test.mov";         static void Main(string[] args)        {            Console.WriteLine(File.Exists(TO_FILE)); //Exists 方法，当路径参数不对时抛出异常            Console.WriteLine(File.Exists("E:\\c#\\c#_net\\15_6"));            File.Copy(TO_FILE, COPY_TO_FILE, true);          //copy抛出多种异常            File.Move(TO_FILE, MOVE_TO_FILE); //可以跨越磁盘卷工作，当目标和源相同时不抛出异常            File.Delete(TO_FILE);    //当要删除的文件不存在时，delete 方法不抛出异常        }    }}

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