传输文件的时候中文部分出现乱码

Question

服务器：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.IO;
namespace FileServer
{
    /// <summary>
    /// 数据包格式
    /// </summary>
    public struct Buffer
    {
        public int cmd;
        public int length;
        public string context;
        public Buffer(int n_cmd, int n_length, string s_context)
        {
            cmd = n_cmd;
            length = n_length;
            context = s_context;
        }
    }    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }        private void btnReady_Click(object sender, EventArgs e)
        {
            bool done = false;
            Socket mySocket;
            Buffer recBuff = new Buffer();
            Buffer sendBuff = new Buffer();
            byte[] recByte = new byte[1024];
            byte[] sendByte = new byte[1024];
            int n_recBytes;
            string tempData;    //for receive
            string sTemp;      //for send
            string filename;
            int n_pointer;
            FileStream fs;
            BinaryWriter fw;            // create the socket
            Socket listenSocket = new Socket(AddressFamily.InterNetwork,
                                             SocketType.Stream,
                                             ProtocolType.Tcp);            // bind the listening socket to the port
            IPAddress hostIP = (Dns.GetHostEntry(Dns.GetHostName())).AddressList[0];
            IPEndPoint ep = new IPEndPoint(hostIP, int.Parse(txtPort.Text));
            filename = "D:\\ttt\\";
            txtMsg.Text ="等待连接请求......";
            try
            {
                listenSocket.Bind(ep);
                while(true)
                {
                    // start listening
                    listenSocket.Listen(10);
                    mySocket = listenSocket.Accept();
                    while (!done)
                    {
                        n_recBytes = mySocket.Receive(recByte);
                        if (n_recBytes > 0)
                        {
                            tempData = Encoding.UTF8.GetString(recByte, 0, n_recBytes);
                            n_pointer = tempData.IndexOf(",");
                            recBuff.cmd = int.Parse(tempData.Substring(0, n_pointer));
                            tempData = tempData.Substring(tempData.IndexOf(",") + 1);
                            n_pointer = tempData.IndexOf(",");
                            recBuff.length = int.Parse(tempData.Substring(0, n_pointer));
                            tempData = tempData.Substring(tempData.IndexOf(",") + 1);
                            //recBuff.context = tempData.Substring(0, recBuff.length);
                            recBuff.context = tempData;
                            UTF8Encoding AE = new UTF8Encoding();
                            int bytesSent;
                            switch (recBuff.cmd)
                            {
                                case 1:        //Create file to save  -----D:\\ttt folder
                                    filename += recBuff.context;
                                    // Delete the file if it exists.
                                    if (File.Exists(filename))
                                    {
                                        File.Delete(filename);
                                    }                                    // Create the file.
                                    fs = new FileStream(filename, FileMode.CreateNew);
                                    fw = new BinaryWriter(fs);
                                    sendBuff.cmd = 2;             //告诉客户端，已经建立了文件，准备接收文件内容
                                    sendBuff.length = 1;
                                    sendBuff.context = "0";       //可以是准备接收的包号，目前没有使用
                                    sTemp = sendBuff.cmd.ToString() + "," + sendBuff.length.ToString() + "," + sendBuff.context;
                                    sendByte = AE.GetBytes(sTemp);
                                    // Send the data through the socket.
                                    bytesSent = mySocket.Send(sendByte);
                                    fs.Close();
                                    fw.Close();
                                    break;
                                case 2:
                                    // write file
                                    fs = new FileStream(filename, FileMode.Append);
                                    fw = new BinaryWriter(fs);
                                    fw.Write(recBuff.context);
                                    fs.Close();
                                    fw.Close();
                                    sendBuff.cmd = 2;             //告诉客户端，可以发送下一个数据包
                                    sendBuff.length = 1;
                                    sendBuff.context = "0";       //可以是准备接收的包号，目前没有使用
                                    sTemp = sendBuff.cmd.ToString() + "," + sendBuff.length.ToString() + "," + sendBuff.context;
                                    sendByte = AE.GetBytes(sTemp);
                                    bytesSent = mySocket.Send(sendByte);
                                    break;
                                case 3:        // the file is finished, close the file  
                                    txtMsg.Text = "完成了文件的接收......";
                                    done = true;                                    break;
                                default:
                                    //fw.Close();
                                    //fs.Close();
                                    break;
                            }
                        }
                    }
                    mySocket.Close();
                    filename = "D:\\ttt\\";
                    done = false;
                }
            }
            catch (Exception se)
            {
                txtMsg.Text = se.ToString();
            }
        }
    }
}

Answer 1

如果你是把传过来的文字写入到文本中，可能是编码的问题

Answer 2

恩，那改怎么改呢?请高人指点下