解决本地文本文件上传到服务器乱码问题（C#），ANSI转UTF-8编码

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;namespace testConsoleApplication1{    class Class2    {        public static void Main()        {            FileStream fs = new FileStream(@"D:\name.xml", FileMode.Open, FileAccess.Read);            //D：\name.xml ANSI编码，含中英文            StreamReader sr = new StreamReader(fs,Encoding.Default);            //StreamReader sr = new StreamReader(fs);中文会显示乱码，加上Encoding.Default就没有乱码了            FileStream fsw = new FileStream(@"D:\renamed.xml", FileMode.Create, FileAccess.Write);            StreamWriter sw = new StreamWriter(fsw, Encoding.UTF8);            Char[] charArr = new Char[100];            int count = sr.Read(charArr, 0, 100);            while (count != 0)            {                sw.Write(charArr, 0, count);                count = sr.Read(charArr, 0, 100);            }            sw.Close();            sr.Close();            fsw.Close();            fs.Close();            FileStream fstest = new FileStream(@"D:\renamed.xml", FileMode.Open, FileAccess.Read);            StreamReader srtest = new StreamReader(fstest);            string rlt = srtest.ReadToEnd();            Console.WriteLine(rlt);        }    }}