using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;

using?System.Net;
using?System.Net.Sockets;
using?System.Threading;
using?System.IO;?

namespace?tcp客戶端
{
????public?partial?class?Form1?:?Form
????{
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????????TextBox.CheckForIllegalCrossThreadCalls?=?false;??
????????}
????????Thread?threadClient?=?null;?//?創建用于接收服務端消息的?線程；???
????????Socket?sockClient?=?null;

????????private?void?btnConnect_Click（object?sender?EventArgs?e）
????????{
????????????IPAddress?ip?=?IPAddress.Parse（txtIp.Text.Trim（））;
????????????IPEndPoint?endPoint?=?new?IPEndPoint（ip?int.Parse（txtPort.Text.Trim（）））;
????????????sockClient?=?new?Socket（AddressFamily.InterNetwork?SocketType.Stream?ProtocolType.Tcp）;
????????????try
????????????{
????????????????ShowMsg（“與服務器連接中……“）;
????????????????sockClient.Connect（endPoint）;

????????????}
????????????catch?（SocketException?se）
????????????{
????????????????MessageBox.Show（se.Message）;
????????????????return;
????????????????//this.Close（）;???
????????????}
????????????ShowMsg（“與服務器連接成功！！！“）;
????????????threadClient?=?new?Thread（RecMsg）;
????????????threadClient.IsBackground?=?true;
????????????threadClient.Start（）;??

????????}
????????public?delegate?void?DeleUpdateTextbox（string?dataRe）;
????????void?RecMsg（）
????????{
????????????DeleUpdateTextbox?deleupdatetextbox?=?new?DeleUpdateTextbox（UpdateTextbox）;
????????????byte[]?arrMsgRec?=?new?byte[1024?*?1024?*?512];
????????????while?（true）
????????????{
????????????????//?定義一個2M的緩存區；???
????????????????
????????????????//?將接受到的數據存入到輸入??arrMsgRec中；???
????????????????int?length?=?-1;
????????????????try
????????????????{
????????????????????length?=?sockClient.Receive（arrMsgRec）;?//?接收數據，并返回數據的長度；???
????????????????????arrMsgRec[length]?=?0;
????????????????}
????????????????catch?（SocketException?se）
????????????????{
????????????????????ShowMsg（“異常；“?+?se.Message）;
????????????????????return;
????????????????}
????????????????catch?（Exception?e）
????????????????{
????????????????????ShowMsg（“異常：“?+?e.Message）;
????????????????????return;
????????????????}
????????????????if?（arrMsgRec[0]?==?0x30）?//?表示接收到的是消息數據；???
????????????????{
????????????????????string?strMsg;?//System.Text.Encoding.Default.GetString（arrMsgRec?1?length?-?1）;//?將接受到的字節數據轉化成字符串；???
????????????????????//ShowMsg（strMsg）;
????????????????????strMsg?=?System.Text.Encoding.UTF8.GetString（arrMsgRec?1?length?-?1）;
????????????????????strMsg?=?“他說:\r\n“?+?strMsg;

????????????????????ShowMsg（strMsg）;

????????????????}
????????????????if?（arrMsgRec[0]?==?0x31）?//?表示接收到的是文件數據；???
????????????????{

????????????????????try
????????????????????{
????????????????????????SaveFileDialog?sfd?=?new?SaveFileDialog（）;

??

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-04-20?20:24??tcp通信\
?????目錄???????????0??2018-05-01?20:31??tcp通信\tcp服務器\
?????文件???????11206??2018-04-27?22:09??tcp通信\tcp服務器\Form1.cs
?????文件????????8731??2018-04-27?22:09??tcp通信\tcp服務器\Form1.Designer.cs
?????文件????????5817??2018-04-27?22:09??tcp通信\tcp服務器\Form1.resx
?????文件?????????484??2018-04-17?22:27??tcp通信\tcp服務器\Program.cs
?????文件???????14336??2018-04-27?22:09??tcp通信\tcp服務器\tcp.exe
?????文件?????????851??2018-04-20?20:22??tcp通信\tcp服務器\tcp.sln
?????文件???????24576??2018-04-27?22:09??tcp通信\tcp服務器\tcp.suo
?????目錄???????????0??2018-05-01?20:31??tcp通信\tcp客戶端\
?????文件????????7897??2018-04-20?20:21??tcp通信\tcp客戶端\Form1.cs
?????文件????????8829??2018-04-20?20:21??tcp通信\tcp客戶端\Form1.Designer.cs
?????文件????????5817??2018-04-20?20:21??tcp通信\tcp客戶端\Form1.resx
?????文件?????????493??2018-04-17?22:40??tcp通信\tcp客戶端\Program.cs
?????文件???????13824??2018-04-27?22:04??tcp通信\tcp客戶端\tcp客戶端.exe
?????文件?????????878??2018-04-20?20:22??tcp通信\tcp客戶端\tcp客戶端.sln
?????文件???????24576??2018-04-27?22:09??tcp通信\tcp客戶端\tcp客戶端.suo