使用TcpLister和TcpClient进行文件传输

http://www.cnblogs.com/bianlan/archive/2012/08/10/2632349.html

启动监听和接收文件的代码如下：

TcpListener listener;

#region 服务器启动监听服务，并开始接收文件        private void btnBegin_Click(object sender, EventArgs e)        {            btnBegin.Enabled = false;            listener = new TcpListener(IPAddress.Parse(txtIp.Text), int.Parse(txtPort.Text));            listener.Start();            ShwMsgForView.ShwMsgforView(lstbxMsgView, "服务器开始监听");            Thread th = new Thread(ReceiveMsg);            th.Start();            th.IsBackground = true;        }        public void ReceiveMsg()        {            while (true)            {                try                {                    int size = 0;                    int len = 0;                    TcpClient client = listener.AcceptTcpClient();                    if (client.Connected)                    {                        //向列表控件中添加一个客户端的Ip和端口，作为发送时客户的唯一标识                        listbOnline.Items.Add(client.Client.RemoteEndPoint);                        ShwMsgForView.ShwMsgforView(lstbxMsgView, "客户端连接成功" + client.Client.RemoteEndPoint.ToString());                    }                    NetworkStream stream = client.GetStream();                    if (stream != null)                    {                        SaveFileDialog sfd = new SaveFileDialog();                        if (sfd.ShowDialog(this) == System.Windows.Forms.DialogResult.OK)                        {                            string fileSavePath = sfd.FileName;//获得用户保存文件的路径                            FileStream fs = new FileStream(fileSavePath, FileMode.Create, FileAccess.Write);                            byte[] buffer = new byte[512];                            while ((size = stream.Read(buffer, 0, buffer.Length)) > 0)                            {                                fs.Write(buffer, 0, size);                                len += size;                            }                            fs.Flush();                            stream.Flush();                            stream.Close();                            client.Close();                            ShwMsgForView.ShwMsgforView(lstbxMsgView, "文件接受成功" + fileSavePath);                        }                    }                }                catch(Exception ex) {                    ShwMsgForView.ShwMsgforView(lstbxMsgView, "出现异常：" + ex.Message);                }            }        }        #endregion

客户端选择文件后，即可直接发送文件：

客户端代码如下：

        //使用TcpLister和TcpClient向服务端发送文件        private void button1_Click(object sender, EventArgs e)        {            TcpClient client = new TcpClient();                       client.Connect(IPAddress.Parse(txtIp.Text), int.Parse(txtPort.Text));            NetworkStream ns = client.GetStream();            FileStream fs = new FileStream(txtFileName.Text, FileMode.Open);            int size = 0;//初始化读取的流量为0               long len = 0;//初始化已经读取的流量               while (len < fs.Length)            {                byte[] buffer = new byte[512];                size = fs.Read(buffer, 0, buffer.Length);                ns.Write(buffer, 0, size);                len += size;                //Pro((long)len);               }            fs.Flush();            ns.Flush();            fs.Close();            ns.Close();            ShowMgs(txtFileName.Text + "文件发送成功");        }