C#实现Socket客户端

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace socket_client
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        Socket tcpClient;//实例Socket
        Thread thrClient;//实例一个线程
        private void btn_Connect_Click(object sender, EventArgs e)
        {
            //获取tbox_IP信息并转换为IP
           try
            {
                IPAddress IP = IPAddress.Parse(this.tbox_IP.Text.Trim());
                IPEndPoint IP_Port = new IPEndPoint(IP, int.Parse(tbox_Port.Text.ToString().Trim()));
                this.tbox_Message.AppendText("正在连接服务器中...."+Environment.NewLine);
                //初始化tcpClient
                tcpClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                tcpClient.Connect(IP_Port);//开始连接
            }
            catch (Exception ex)
            {
                this.tbox_Message.AppendText("连接失败," + ex.Message + Environment.NewLine);
                return;
            }
            this.tbox_Message.AppendText("连接成功!" + Environment.NewLine);
            thrClient = new Thread(RcvMessage);//初始化线程
            thrClient.IsBackground = true;//配置为后台线程;
            thrClient.Start();//启动线程;

        }

        private void RcvMessage()
        {
            while (true)
            {
                byte[] abyRcv = new byte[1024 * 1024 * 2];
                int Length = tcpClient.Receive(abyRcv);
                if (Length == 0)//表示客户端已经断开了
                {
                    Invoke(new Action(() => this.tbox_Message.AppendText("断开连接" + Environment.NewLine)));
                }
                else
                {
                    //byte数组转换为string类型;
                    string strRcv = "接收:" + Encoding.UTF8.GetString(abyRcv, 0, Length) + "\r\n";
                    Invoke(new Action(() => this.tbox_Message.AppendText(strRcv)));
                }
            }

        }

        private void btn_Send_Click(object sender, EventArgs e)
        {
            try
            {
                //string类型转换为byte数组
                byte[] abySend = Encoding.UTF8.GetBytes(tbox_SendData.Text.Trim());
                tcpClient.Send(abySend); 
            }
            catch (Exception ee)
            {
                this.tbox_Message.AppendText(ee.ToString());
                return;
            }
            Invoke(new Action(() => this.tbox_Message.AppendText("发送:" + tbox_SendData.Text + "\r\n")));

        }
    }
}