form1.cs

聊天软件C#编写 局域网聊天 henhaode ruanjian hauanyingxiazai

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;//用到网络编程所需要的命名空间；
using System.IO;
using System.Threading;//多线程编程；

namespace P2Pchat
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private Thread th;//定义一个线程对象；
		private TcpListener tcp1;//监听；
		private bool listenerRun=true;//循环结束条件；
		
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.RichTextBox richTextBox1;
		private System.Windows.Forms.StatusBar statusBar1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		/// 

		private void Listen()//实现监听功能；
		{
			try
			{
				IPAddress ipAd=IPAddress.Parse(this.textBox1.Text.Trim());//实例化一个网络IP地址；
				tcp1=new TcpListener (ipAd,5656);//初始化监听器；
				tcp1.Start();//开始监听服务器端口；
				this.statusBar1.Text="正在监听...";
				while(listenerRun)
				{
					Socket s=tcp1.AcceptSocket();//用S表示新建立的套接字；
					byte[] stream=new byte [100];//用于接收客户端信息；
					int i=s.Receive(stream);//接收字节，并存入缓冲区；
					string message=System.Text.Encoding.UTF8.GetString(stream);//返回一个包含UTF-8格式的字符编码的字符串；
					this.richTextBox1.AppendText(message);//追加文本；
				}

			}
			catch(System.Security.SecurityException)//异常处理；
			{
				MessageBox.Show("防火墙安全错误!","Error");// 开启了防火墙；
			}
			catch(Exception)//停止监听；
			{
				this.statusBar1.Text="已停止监听!";
			}

			}
		private void Send()//发送消息；
		{
			try
			{
				string msg="<"+this.textBox3.Text+">"+this.textBox2.Text;//消息内容和昵称；
				TcpClient tcpc=new TcpClient (this.textBox1.Text,5656);//建立客户端套接字并初始化；
				NetworkStream tcpStream=tcpc.GetStream();//NetworkStream提供网络防问的数据流；

				StreamWriter reqStreamW=new StreamWriter (tcpStream);//以一种特定的编码写入数据流；
				reqStreamW.Write(msg);//将字符串写入数据流；
				reqStreamW.Flush();//清理当前编写器的缓冲区，并将缓冲区数据写入基础流；
				tcpStream.Close();//关闭流；
				tcpc.Close();//关闭连接；
				this.richTextBox1.AppendText(msg);
				this.textBox3.Clear();
			}
			catch (Exception)
			{
				this.statusBar1.Text="目标计算机拒绝连接请求!";	
			}
		}

		private void Stop()
		{
			tcp1.Stop();
			th.Abort();//终止线程；
		}
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.button3 = new System.Windows.Forms.Button();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
			this.statusBar1 = new System.Windows.Forms.StatusBar();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.label1.Location = new System.Drawing.Point(16, 8);
			this.label1.Name = "label1";
			this.label1.TabIndex = 0;
			this.label1.Text = "目标地址:";
			// 
			// label2
			// 
			this.label2.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.label2.Location = new System.Drawing.Point(16, 48);
			this.label2.Name = "label2";
			this.label2.TabIndex = 1;
			this.label2.Text = "昵称:";
			// 
			// textBox1
			// 
			this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.textBox1.Location = new System.Drawing.Point(128, 8);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(200, 21);
			this.textBox1.TabIndex = 2;
			this.textBox1.Text = "";
			// 
			// textBox2
			// 
			this.textBox2.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.textBox2.Location = new System.Drawing.Point(128, 48);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(200, 21);
			this.textBox2.TabIndex = 3;
			this.textBox2.Text = "";
			// 
			// button1
			// 
			this.button1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
			this.button1.Location = new System.Drawing.Point(8, 88);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(88, 23);
			this.button1.TabIndex = 4;
			this.button1.Text = "开始监听";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.button2.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
			this.button2.Location = new System.Drawing.Point(8, 120);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(88, 23);
			this.button2.TabIndex = 5;
			this.button2.Text = "停止监听";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// button3
			// 
			this.button3.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.button3.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
			this.button3.Location = new System.Drawing.Point(8, 152);
			this.button3.Name = "button3";
			this.button3.Size = new System.Drawing.Size(88, 23);
			this.button3.TabIndex = 6;
			this.button3.Text = "发送消息";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// textBox3
			// 
			this.textBox3.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.textBox3.Location = new System.Drawing.Point(128, 88);
			this.textBox3.Multiline = true;
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(200, 88);
			this.textBox3.TabIndex = 7;
			this.textBox3.Text = "";
			// 
			// label3
			// 
			this.label3.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.label3.Location = new System.Drawing.Point(24, 184);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(64, 16);
			this.label3.TabIndex = 8;
			this.label3.Text = "聊天记录:";
			// 
			// richTextBox1
			// 
			this.richTextBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.richTextBox1.Location = new System.Drawing.Point(8, 200);
			this.richTextBox1.Name = "richTextBox1";
			this.richTextBox1.Size = new System.Drawing.Size(320, 96);
			this.richTextBox1.TabIndex = 9;
			this.richTextBox1.Text = "";
			// 
			// statusBar1
			// 
			this.statusBar1.Location = new System.Drawing.Point(0, 304);
			this.statusBar1.Name = "statusBar1";
			this.statusBar1.Size = new System.Drawing.Size(344, 22);
			this.statusBar1.TabIndex = 10;
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(344, 326);
			this.Controls.Add(this.statusBar1);
			this.Controls.Add(this.richTextBox1);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.textBox3);
			this.Controls.Add(this.button3);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.MaximizeBox = false;
			this.Name = "Form1";
			this.Text = "Form1";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			this.button1.Enabled=false;
			this.button2.Enabled=true;
			th=new Thread (new ThreadStart(Listen));
			th.Start();
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			this.button1.Enabled=true;
			this.button2.Enabled=false;
			listenerRun=false;
			Stop();
		}

		private void button3_Click(object sender, System.EventArgs e)
		{
			Send();
		}
	}
}