C#聊天法式辦事端與客戶端完全實例代碼。本站提示廣大學習愛好者：（C#聊天法式辦事端與客戶端完全實例代碼）文章只能為提供參考，不一定能成為您想要的結果。以下是C#聊天法式辦事端與客戶端完全實例代碼正文
本文所述為基於C#完成的多人聊天法式辦事端與客戶端完全代碼。本實例省略了卻構界說部門，辦事端重要是邏輯處置部門代碼，是以應用時須要完美一些窗體按鈕之類的。
先看辦事端代碼以下：
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace 多人聊天法式Server端
{
/// <summary>
/// 運用法式的主進口點。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
// 啟動辦事按鈕
private void button2_Click(object sender, System.EventArgs e)
{
try
{
// 必需填寫端口
if(txtPort.Text == "")
{
MessageBox.Show("請先填寫辦事端標語!", "提醒");
return;
}
Int32 port = Int32.Parse(txtPort.Text); // 取得端標語
// 創立偵聽的Socket
mainSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint localEP = new IPEndPoint(IPAddress.Any, port);
// 將 Socket 綁定到當地的終結點上
mainSocket.Bind(localEP);
// 開端偵聽，最年夜的銜接數是 5
mainSocket.Listen(5);
// 開端一個異步操作接收客戶的銜接要求
mainSocket.BeginAccept(new AsyncCallback(OnClientConnect), null);
// 啟動辦事按鈕弗成用，停滯辦事按鈕可用
UpdateControls(true);
}
catch(SocketException se)
{
MessageBox.Show(se.Message, "提醒");
}
}
// 更新“啟動辦事按鈕”和“停滯辦事”按鈕的狀況：能否可用；
// 留意：兩個按鈕的狀況是互斥的
private void UpdateControls(bool onServe)
{
button2.Enabled = !onServe;
button3.Enabled = onServe;
if(onServe)
{
status.Text = "已啟動辦事";
}
else
{
status.Text = "未啟動辦事";
}
}
// 回調函數，當客戶銜接上時，將會被挪用
public void OnClientConnect(IAsyncResult asyn)
{
try
{
// 挪用EndAccept完成BeginAccept異步驟用，前往一個新的Socket處置與客戶的通訊
Socket workerSocket = mainSocket.EndAccept(asyn);
// 增長客戶數量
Interlocked.Increment(ref clientNum);
// 將 workerSocket Socket參加到 ArrayList 中
workerSocketList.Add(workerSocket);
// 發送迎接信息給銜接上辦事器的客戶
string msg = "迎接客戶 " + clientNum + " 登錄辦事器\n";
SendWelcomeToClient(msg, clientNum);
// 在線客戶數量轉變，必需更新客戶列表
UpdateClientListControl();
// 銜接上的客戶吸收數據
WaitForData(workerSocket, clientNum);
// 主 Socket 前往，持續期待其它的銜接要求
mainSocket.BeginAccept(new AsyncCallback(OnClientConnect), null);
}
catch(ObjectDisposedException)
{
System.Diagnostics.Debugger.Log(0,"1","\n OnClientConnection: Socket曾經封閉!\n");
}
catch(SocketException se)
{
MessageBox.Show(se.Message, "提醒");
}
}
// 發送迎接信息給客戶
void SendWelcomeToClient(string msg, int clientNumber)
{
// 用UTF8格局來將string信息轉化成byte數組情勢
byte[] byData = System.Text.Encoding.UTF8.GetBytes(msg);
// 取得客戶clientNumber對應的Socket
Socket workerSocket = (Socket)workerSocketList[clientNumber - 1];
// 將數據發給客戶
workerSocket.Send(byData);
}
// 該類保留以後的socket，它的客戶號還有發送給辦事器的數據
public class SocketPacket
{
public System.Net.Sockets.Socket currentSocket; // 以後的Socket
public int clientNumber; // 客戶號
public byte[] dataBuffer = new byte[1024]; // 發給辦事器的數據
// 結構函數
public SocketPacket(System.Net.Sockets.Socket socket, int clientNumber)
{
currentSocket = socket;
this.clientNumber = clientNumber;
}
}
// 開端期待客戶發送數據
public void WaitForData(System.Net.Sockets.Socket socket, int clientNumber)
{
try
{
if(pfnWorkerCallBack == null)
{
// 當銜接上的客戶有寫的操作的時刻，挪用回調函數
pfnWorkerCallBack = new AsyncCallback(OnDataReceived);
}
SocketPacket socketPacket = new SocketPacket(socket, clientNumber);
socket.BeginReceive(socketPacket.dataBuffer, 0, socketPacket.dataBuffer.Length,
SocketFlags.None, pfnWorkerCallBack, socketPacket);
}
catch(SocketException se)
{
MessageBox.Show (se.Message, "提醒");
}
}
// 當客戶寫數據時，挪用以下辦法
public void OnDataReceived(IAsyncResult asyn)
{
SocketPacket socketData = (SocketPacket)asyn.AsyncState ;
try
{
// EndReceive完成BeginReceive異步驟用，前往客戶寫入流的字節數
int iRx = socketData.currentSocket.EndReceive(asyn);
// 加 1 是由於字符串以 '\0' 作為停止標記符
char[] chars = new char[iRx + 1];
// 對客戶發來的信息停止UTF8解碼，存入chars字符數組中
System.Text.Decoder decoder = System.Text.Encoding.UTF8.GetDecoder();
int charLen = decoder.GetChars(socketData.dataBuffer, 0, iRx, chars, 0);
System.String szData = new System.String(chars);
string msg = "客戶 " + socketData.clientNumber + " 發的信息:" + szData;
// 將客戶發的數據參加到信息列表中
AppendToRichEditControl(msg);
// 期待數據
WaitForData(socketData.currentSocket, socketData.clientNumber);
}
catch (ObjectDisposedException )
{
System.Diagnostics.Debugger.Log(0,"1","\nOnDataReceived: Socket曾經封閉!\n");
}
catch(SocketException se)
{
if(se.ErrorCode == 10054)
{
// 將客戶斷開銜接的信息寫入信息列表中
string msg = "客戶 " + socketData.clientNumber + " 已斷開了銜接!" + "\n";
AppendToRichEditControl(msg);
// 移走已封閉的socket
workerSocketList[socketData.clientNumber - 1] = null;
// 更新客戶列表
UpdateClientListControl();
}
else
{
MessageBox.Show (se.Message, "提醒");
}
}
}
// 更新信息列表，該辦法可由主線程或其他任務線程所挪用
private void AppendToRichEditControl(string msg)
{
// 測試看是哪一個線程挪用了該辦法
if (InvokeRequired)
{
// We cannot update the GUI on this thread.
// All GUI controls are to be updated by the main (GUI) thread.
// Hence we will use the invoke method on the control which will
// be called when the Main thread is free
// Do UI update on UI thread
object[] pList = {msg};
txtRecvMsg.BeginInvoke(new UpdateRichEditCallback(OnUpdateRichEdit), pList);
}
else
{
// 創立該控件的主線程直接更新信息列表
OnUpdateRichEdit(msg);
}
}
// 添加信息到 txtRecvMsg 中
private void OnUpdateRichEdit(string msg)
{
// txtRecvMsg.AppendText(msg);
txtRecvMsg.Text = txtRecvMsg.Text + msg;
}
// 更新客戶列表
private void UpdateClientListControl()
{
if (InvokeRequired) // Is this called from a thread other than the one created
// the control
{
clientList.BeginInvoke(new UpdateClientListCallback(UpdateClientList), null);
}
else
{
// 創立該控件的主線程直接更新信息列表
UpdateClientList();
}
}
// 更新客戶列表
void UpdateClientList()
{
clientList.Items.Clear(); // 清空客戶列表
for(int i = 0; i < workerSocketList.Count; i++)
{
// 加1，是由於數組從下標0開端，而我們的客戶標號是從1開端
string clientKey = Convert.ToString(i + 1);
Socket workerSocket = (Socket)workerSocketList[i];
if(workerSocket != null)
{
// 將銜接著辦事器的客戶添加到客戶列表中
if(workerSocket.Connected)
{
clientList.Items.Add(clientKey);
}
}
}
}
// 停滯辦事按鈕
private void button3_Click(object sender, System.EventArgs e)
{
CloseSockets();
UpdateControls(false);
// 更新客戶列表
UpdateClientListControl();
}
// 發送信息按鈕
private void button1_Click(object sender, System.EventArgs e)
{
// 假如在線客戶列表不為空，則許可發送信息
if (clientList.Items.Count != 0 )
{
try
{
string msg = txtSendMsg.Text;
msg = "辦事器信息: " + msg + "\n";
byte[] byData = System.Text.Encoding.UTF8.GetBytes(msg);
Socket workerSocket = null;
for(int i = 0; i < workerSocketList.Count; i++)
{
workerSocket = (Socket)workerSocketList[i];
if(workerSocket!= null)
{
// 發給一切銜接上辦事器的客戶
if(workerSocket.Connected)
{
workerSocket.Send(byData);
}
}
}
}
catch(SocketException se)
{
MessageBox.Show(se.Message, "提醒");
}
}
else
{
MessageBox.Show("沒有在線客戶,不克不及發送信息!", "提醒");
}
}
// 清空信息按鈕
private void button4_Click(object sender, System.EventArgs e)
{
txtRecvMsg.Clear(); // 清空從客戶發來的信息
}
// 封閉窗體按鈕
private void button5_Click(object sender, System.EventArgs e)
{
CloseSockets();
Close();
}
// 封閉Socket
void CloseSockets()
{
// 封閉主Socket
if(mainSocket != null)
{
mainSocket.Close();
}
Socket workerSocket = null;
// 封閉客戶 Socket 數組
for(int i = 0; i < workerSocketList.Count; i++)
{
workerSocket = (Socket)workerSocketList[i];
if(workerSocket != null)
{
workerSocket.Close();
workerSocket = null;
}
}
}
private void Form1_Load(object sender, System.EventArgs e)
{
try
{
// 取得本機的IP地址
txtIP.Text = Dns.Resolve(Dns.GetHostName()).AddressList[0].ToString();
// 啟動時，啟動辦事按鈕可用，停滯辦事按鈕弗成用
UpdateControls(false);
}
catch(Exception exc)
{
MessageBox.Show(exc.Message, "提醒");
}
}
}
}
客戶端重要完成吸收來自辦事端前往的新聞、完成發送新聞的操作界面，創立Socket實例，獲得辦事器的IP地址，更新控件，銜接和斷開等，詳細代碼以下：
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets;
namespace 多人聊天法式Client端
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox txtIP;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.RichTextBox txtSendMsg;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button4;
private System.Windows.Forms.RichTextBox txtRecvMsg;
private System.Windows.Forms.TextBox txtPort;
private System.Windows.Forms.Button button5;
private System.ComponentModel.Container components = null;
byte[] m_dataBuffer = new byte[10];
IAsyncResult result;
public AsyncCallback pfnCallBack ;
private System.Windows.Forms.Label status;
private System.Windows.Forms.Label label5;
public Socket clientSocket;
public Form1()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.txtIP = new System.Windows.Forms.TextBox();
this.label2 = new System.Windows.Forms.Label();
this.txtPort = new System.Windows.Forms.TextBox();
this.label3 = new System.Windows.Forms.Label();
this.txtSendMsg = new System.Windows.Forms.RichTextBox();
this.label4 = new System.Windows.Forms.Label();
this.status = new System.Windows.Forms.Label();
this.txtRecvMsg = new System.Windows.Forms.RichTextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.label5 = new System.Windows.Forms.Label();
this.button5 = new System.Windows.Forms.Button();
this.SuspendLayout();
// label1
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(16, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(60, 17);
this.label1.TabIndex = 0;
this.label1.Text = "辦事器IP:";
// txtIP
this.txtIP.Location = new System.Drawing.Point(80, 24);
this.txtIP.Name = "txtIP";
this.txtIP.Size = new System.Drawing.Size(160, 21);
this.txtIP.TabIndex = 1;
this.txtIP.Text = "";
// label2
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(16, 56);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(35, 17);
this.label2.TabIndex = 2;
this.label2.Text = "端口:";
// txtPort
this.txtPort.Location = new System.Drawing.Point(80, 56);
this.txtPort.Name = "txtPort";
this.txtPort.Size = new System.Drawing.Size(40, 21);
this.txtPort.TabIndex = 3;
this.txtPort.Text = "";
// label3
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(16, 96);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(110, 17);
this.label3.TabIndex = 4;
this.label3.Text = "發送信息給辦事器:";
// txtSendMsg
this.txtSendMsg.Location = new System.Drawing.Point(16, 120);
this.txtSendMsg.Name = "txtSendMsg";
this.txtSendMsg.Size = new System.Drawing.Size(224, 88);
this.txtSendMsg.TabIndex = 5;
this.txtSendMsg.Text = "";
// label4
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(16, 248);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(60, 17);
this.label4.TabIndex = 6;
this.label4.Text = "銜接狀況:";
// status
this.status.Location = new System.Drawing.Point(80, 248);
this.status.Name = "status";
this.status.Size = new System.Drawing.Size(192, 23);
this.status.TabIndex = 7;
// txtRecvMsg
this.txtRecvMsg.Location = new System.Drawing.Point(264, 80);
this.txtRecvMsg.Name = "txtRecvMsg";
this.txtRecvMsg.ReadOnly = true;
this.txtRecvMsg.Size = new System.Drawing.Size(224, 144);
this.txtRecvMsg.TabIndex = 8;
this.txtRecvMsg.Text = "";
// button1
this.button1.Location = new System.Drawing.Point(280, 16);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(88, 32);
this.button1.TabIndex = 9;
this.button1.Text = "銜接";
this.button1.Click += new System.EventHandler(this.button1_Click);
// button2
this.button2.Location = new System.Drawing.Point(384, 16);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(88, 32);
this.button2.TabIndex = 10;
this.button2.Text = "斷開";
this.button2.Click += new System.EventHandler(this.button2_Click);
// button3
this.button3.Location = new System.Drawing.Point(280, 232);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(88, 32);
this.button3.TabIndex = 11;
this.button3.Text = "清空信息";
this.button3.Click += new System.EventHandler(this.button3_Click);
// button4
this.button4.Location = new System.Drawing.Point(384, 232);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(88, 32);
this.button4.TabIndex = 12;
this.button4.Text = "封閉";
this.button4.Click += new System.EventHandler(this.button4_Click);
// label5
this.label5.AutoSize = true;
this.label5.Location = new System.Drawing.Point(264, 64);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(134, 17);
this.label5.TabIndex = 13;
this.label5.Text = "收到辦事器發來的信息:";
// button5
this.button5.Location = new System.Drawing.Point(16, 208);
this.button5.Name = "button5";
this.button5.Size = new System.Drawing.Size(224, 32);
this.button5.TabIndex = 14;
this.button5.Text = "發送信息";
this.button5.Click += new System.EventHandler(this.button5_Click);
// Form1
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(512, 277);
this.Controls.Add(this.button5);
this.Controls.Add(this.label5);
this.Controls.Add(this.button4);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.txtRecvMsg);
this.Controls.Add(this.status);
this.Controls.Add(this.label4);
this.Controls.Add(this.txtSendMsg);
this.Controls.Add(this.label3);
this.Controls.Add(this.txtPort);
this.Controls.Add(this.label2);
this.Controls.Add(this.txtIP);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "多人聊天法式Client端";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
// 銜接按鈕
private void button1_Click(object sender, System.EventArgs e)
{
// IP地址和端標語不克不及為空
if(txtIP.Text == "" || txtPort.Text == "")
{
MessageBox.Show("請先完全填寫辦事器IP地址和端標語!", "提醒");
return;
}
try
{
// 創立Socket實例
clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// 獲得辦事器的IP地址
IPAddress ipAddress = IPAddress.Parse(txtIP.Text);
Int32 port = Int32.Parse(txtPort.Text);
// 創立長途終結點
IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);
// 銜接到長途辦事器
clientSocket.Connect(remoteEP);
if(clientSocket.Connected)
{
UpdateControls(true);
WaitForData(); // 異步期待數據
}
}
catch(SocketException se)
{
MessageBox.Show (se.Message, "提醒");
UpdateControls(false);
}
}
// 期待數據
public void WaitForData()
{
try
{
if(pfnCallBack == null)
{
// 當銜接上的客戶有寫的操作的時刻，挪用回調函數
pfnCallBack = new AsyncCallback(OnDataReceived);
}
SocketPacket socketPacket = new SocketPacket();
socketPacket.thisSocket = clientSocket;
result = clientSocket.BeginReceive(socketPacket.dataBuffer, 0, socketPacket.dataBuffer.Length,
SocketFlags.None, pfnCallBack, socketPacket);
}
catch(SocketException se)
{
MessageBox.Show(se.Message, "提醒");
}
}
// 該類保留Socket和發送給辦事器的數據
public class SocketPacket
{
public System.Net.Sockets.Socket thisSocket;
public byte[] dataBuffer = new byte[1024]; // 發給辦事器的數據
}
// 吸收數據
public void OnDataReceived(IAsyncResult asyn)
{
try
{
SocketPacket theSockId = (SocketPacket)asyn.AsyncState ;
// EndReceive完成BeginReceive異步驟用，前往辦事器寫入流的字節數
int iRx = theSockId.thisSocket.EndReceive(asyn);
// 加 1 是由於字符串以 '\0' 作為停止標記符
char[] chars = new char[iRx + 1];
// 用UTF8格局來將string信息轉化成byte數組情勢
System.Text.Decoder decoder = System.Text.Encoding.UTF8.GetDecoder();
int charLen = decoder.GetChars(theSockId.dataBuffer, 0, iRx, chars, 0);
System.String szData = new System.String(chars);
// 將收到的信息顯示在信息列表中
txtRecvMsg.Text = txtRecvMsg.Text + szData;
// 期待數據
WaitForData();
}
catch (ObjectDisposedException)
{
System.Diagnostics.Debugger.Log(0,"1","\nOnDataReceived: Socket曾經封閉!\n");
}
catch(SocketException se)
{
if(se.ErrorCode == 10054)
{
string msg = "辦事器" + "停滯辦事!" + "\n";
txtRecvMsg.Text = txtRecvMsg.Text + msg;
clientSocket.Close();
clientSocket = null;
UpdateControls(false);
}
else
{
MessageBox.Show(se.Message, "提醒");
}
}
}
// 更新控件。銜接和斷開（發送信息）按鈕的狀況是互斥的
private void UpdateControls(bool connected)
{
button1.Enabled = !connected;
button2.Enabled = connected;
button5.Enabled = connected;
if(connected)
{
status.Text = "已銜接";
}
else
{
status.Text = "無銜接";
}
}
// 斷開按鈕
private void button2_Click(object sender, System.EventArgs e)
{
// 封閉Socket
if(clientSocket != null)
{
clientSocket.Close();
clientSocket = null;
UpdateControls(false);
}
}
// 發送信息按鈕
private void button5_Click(object sender, System.EventArgs e)
{
try
{
// 假如客戶與辦事器有銜接，則許可發送信息
if(clientSocket.Connected)
{
string msg = txtSendMsg.Text + "\n";
// 用UTF8格局來將string信息轉化成byte數組情勢
byte[] byData = System.Text.Encoding.UTF8.GetBytes(msg);
if(clientSocket != null)
{
// 發送數據
clientSocket.Send(byData);
}
}
}
catch(Exception se)
{
MessageBox.Show(se.Message, "提醒");
}
}
// 清空按鈕
private void button3_Click(object sender, System.EventArgs e)
{
txtRecvMsg.Clear(); // 清空信息列表
}
// 封閉按鈕
private void button4_Click(object sender, System.EventArgs e)
{
// 封閉Socket
if(clientSocket != null)
{
clientSocket.Close();
clientSocket = null;
}
Close(); // 封閉窗體
}
private void Form1_Load(object sender, System.EventArgs e)
{
UpdateControls(false); // 初始化時，只要銜接按鈕可用
}
}
}
