TCP客户端

上面发了服务器端,没发客户端,现在补上!不知道写的好不好,见笑了 

C# code 

public partial class Form1 : Form 

    { 

        private TcpClient client; 

        private bool isExit = false; 

        private NetworkStream networkStream; 

        private EventWaitHandle allDone = new EventWaitHandle(false, EventResetMode.ManualReset); 

        #region 用于一个线程操作另一个线程的控件 

        private delegate void SetListBoxCallback(string str); 

        private SetListBoxCallback setListBoxCallBack; 

        private delegate void SetRichTextBoxCallback(string str); 

        private SetRichTextBoxCallback setRichTextBoxCallBack; 

        #endregion 

        public Form1() 

        { 

            InitializeComponent(); 

            listBoxStatus.HorizontalScrollbar = true; 

            setListBoxCallBack = new SetListBoxCallback(SetListBox); 

            setRichTextBoxCallBack = new SetRichTextBoxCallback(SetReceiveText); 

        } 

        //状态显示 

        private void SetListBox(string str) 

        { 

            listBoxStatus.Items.Add(str); 

            listBoxStatus.SelectedIndex = listBoxStatus.Items.Count - 1; 

            listBoxStatus.ClearSelected(); 

        } 

        //接收客户端信息 

        private void SetReceiveText(string str) 

        { 

            richTextBoxReceive.AppendText(str); 

        } 

        //连接服务器.... 

        private void buttonConnet_Click(object sender, EventArgs e) 

        { 

            client = new TcpClient(AddressFamily.InterNetwork); 

            //得到服务器IP 

            IPAddress ip= IPAddress.Parse("127.0.0.1"); 

            //创建一个委托,并知名在异步操作完成时执行的方法 

            AsyncCallback callback = new AsyncCallback(RequestCallBack); 

            allDone.Reset(); 

            client.BeginConnect(ip, 7100, RequestCallBack, client); 

        } 

        private void RequestCallBack(IAsyncResult ar) 

        { 

            allDone.Set(); 

            try 

            { 

                client = (TcpClient)ar.AsyncState; 

                client.EndConnect(ar); 

                listBoxStatus.Invoke(setListBoxCallBack, string.Format("与服务器{0}连接成功", client.Client.RemoteEndPoint)); 

                networkStream = client.GetStream(); 

                ReadObject readObject = new ReadObject(networkStream, client.ReceiveBufferSize); 

                networkStream.BeginRead(readObject.bytes, 0, readObject.bytes.Length, ReadCallBack, readObject); 

            } 

            catch (Exception e1) 

            { 

                listBoxStatus.Invoke(setListBoxCallBack, e1.Message); 

                return; 

            } 

        } 

        //异步操作完成时执行的回调调用的方法 

        private void ReadCallBack(IAsyncResult ar) 

        { 

            try 

            { 

                ReadObject ro = (ReadObject)ar.AsyncState; 

                int count = ro.netStream.EndRead(ar); 

                richTextBoxReceive.Invoke(setRichTextBoxCallBack, System.Text.Encoding.UTF8.GetString(ro.bytes, 0, count)); 

                if (isExit == false) 

                { 

                    ro = new ReadObject(networkStream, client.ReceiveBufferSize); 

                    networkStream.BeginRead(ro.bytes, 0, ro.bytes.Length, ReadCallBack, ro); 

                } 

            } 

            catch (Exception e2) 

            { 

                listBoxStatus.Invoke(setListBoxCallBack, e2.Message); 

                return; 

            } 

        } 

        //发送数据 

        private void SendString(string str) 

        { 

            try 

            { 

                byte[] by = System.Text.Encoding.UTF8.GetBytes(str+"\r\n"); 

                networkStream.BeginWrite(by, 0, by.Length, new AsyncCallback(SendCallBack), networkStream); 

                networkStream.Flush(); 

            }catch(Exception e3){ 

                listBoxStatus.Invoke(setListBoxCallBack, e3.Message); 

                return; 

            } 

        } 

        //发送数据回调的方法 

        private void SendCallBack(IAsyncResult ar) 

        { 

            try 

            { 

                networkStream.EndWrite(ar); 

            } 

            catch (Exception e4) 

            { 

                listBoxStatus.Invoke(setListBoxCallBack, e4.Message); 

                return; 

            } 

        } 

        private void buttonSend_Click(object sender, EventArgs e) 

        { 

            SendString(richTextBoxSend.Text); 

            richTextBoxSend.Clear(); 

        } 

        private void Form1_FormClosing(object sender, FormClosingEventArgs e) 

        { 

            isExit = true; 

            allDone.Set(); 

        } 

    }