自动将指定目录下面的文件转换为UTF-8

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

namespace save2Utf8
{
    class Program
    {
        static void Main(string[] args)
        {
            string dir, filters;
            //Console.WriteLine("Please input the directory:");
            //dir = Console.ReadLine();
            dir = @"D:\working\code\trunk\src\OAWeb\OAProject.Admin";
            Console.WriteLine("要转换的路径为:" + dir);
            Console.WriteLine("Please input the filter(such as *.c,*.cpp):");
            filters = Console.ReadLine();
            Console.WriteLine("The following files will be converted:");
            List<string> destfiles = new List<string>();
            foreach (string filter in filters.Split(','))
            {
                foreach (var eachfileinfo in new DirectoryInfo(dir).GetFiles(filter, SearchOption.AllDirectories))
                {
                    destfiles.Add(eachfileinfo.FullName);
                    Console.WriteLine(eachfileinfo.FullName);
                }
            }
            Console.WriteLine("You Sure? (y or n)");
            string ans = Console.ReadLine();
            if (ans.Equals("y", StringComparison.OrdinalIgnoreCase))
            {
                foreach (string destfile in destfiles)
                {
                    File.WriteAllText(destfile, File.ReadAllText(destfile, Encoding.Default), Encoding.UTF8);
                }
                Console.WriteLine("finished.");
            }
            else
            {
                Console.WriteLine("Nothing changed.");
            }
            Console.WriteLine("Press any key to exit.");
            Console.ReadLine();
        }
    }
}