各位,帮我看看我这个程序,为什么有的机器会收不到我用net send发送的消息~~ 对方机器messenger服务已开启,但是他的机器不处在监听的状态下,所以无法接收你的信息 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.Threading;using System.Net.Sockets;using System.IO;namespace ch7_2{ /// <summary> /// Form1 的摘要说明。 /// </summary> public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.RichTextBox richTextBox1; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Label label1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; private System.Windows.Forms.Label label2; private System.Windows.Forms.TextBox textBox2; private System.Windows.Forms.Button button3; private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.StatusBar statusBar1; //代表监听的线程 private Thread listenThread; //代表监听的状态 private bool listen=false; //代表网络监听的对象 private TcpListener tcpListener; private System.Windows.Forms.RichTextBox richTextBox2; /// <summary> /// 必需的设计器变量。 /// </summary> 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 Form Designer generated code /// <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.richTextBox1 = new System.Windows.Forms.RichTextBox(); this.textBox1 = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.label2 = new System.Windows.Forms.Label(); this.textBox2 = new System.Windows.Forms.TextBox(); this.button3 = new System.Windows.Forms.Button(); this.groupBox1 = new System.Windows.Forms.GroupBox(); this.statusBar1 = new System.Windows.Forms.StatusBar(); this.richTextBox2 = new System.Windows.Forms.RichTextBox(); this.groupBox1.SuspendLayout(); this.SuspendLayout(); // // richTextBox1 // this.richTextBox1.Location = new System.Drawing.Point(16, 8); this.richTextBox1.Name = "richTextBox1"; this.richTextBox1.Size = new System.Drawing.Size(272, 40); this.richTextBox1.TabIndex = 0; this.richTextBox1.Text = ""; // // textBox1 // this.textBox1.Location = new System.Drawing.Point(88, 20); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(176, 21); this.textBox1.TabIndex = 1; this.textBox1.Text = ""; // // label1 // this.label1.Location = new System.Drawing.Point(16, 24); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(72, 16); this.label1.TabIndex = 2; this.label1.Text = "目标地址"; // // button1 // this.button1.Location = new System.Drawing.Point(104, 56); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(72, 24); this.button1.TabIndex = 3; this.button1.Text = "准备接收"; this.button1.Click += new System.EventHandler(this.button1_Click); // // button2 // this.button2.Enabled = false; this.button2.Location = new System.Drawing.Point(190, 56); this.button2.Name = "button2"; this.button2.TabIndex = 4; this.button2.Text = "停止接收"; this.button2.Click += new System.EventHandler(this.button2_Click); // // label2 // this.label2.Location = new System.Drawing.Point(24, 62); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(72, 16); this.label2.TabIndex = 5; this.label2.Text = "请输入姓名"; // // textBox2 // this.textBox2.Location = new System.Drawing.Point(104, 56); this.textBox2.Name = "textBox2"; this.textBox2.TabIndex = 6; this.textBox2.Text = ""; // // button3 // this.button3.Location = new System.Drawing.Point(224, 56); this.button3.Name = "button3"; this.button3.Size = new System.Drawing.Size(56, 23); this.button3.TabIndex = 7; this.button3.Text = "发送"; this.button3.Click += new System.EventHandler(this.button3_Click); // // groupBox1 // this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] { this.label1, this.textBox1, this.button1, this.button2}); this.groupBox1.Location = new System.Drawing.Point(16, 192); this.groupBox1.Name = "groupBox1"; this.groupBox1.Size = new System.Drawing.Size(272, 96); this.groupBox1.TabIndex = 8; this.groupBox1.TabStop = false; // // statusBar1 // this.statusBar1.Location = new System.Drawing.Point(0, 303); this.statusBar1.Name = "statusBar1"; this.statusBar1.Size = new System.Drawing.Size(296, 22); this.statusBar1.TabIndex = 9; // // richTextBox2 // this.richTextBox2.Location = new System.Drawing.Point(16, 88); this.richTextBox2.Name = "richTextBox2"; this.richTextBox2.Size = new System.Drawing.Size(272, 96); this.richTextBox2.TabIndex = 10; this.richTextBox2.Text = ""; // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(296, 325); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.richTextBox2, this.statusBar1, this.groupBox1, this.button3, this.textBox2, this.label2, this.richTextBox1}); this.Name = "Form1"; this.Text = "点对点聊天"; this.Closed += new System.EventHandler(this.Form1_Closed); this.groupBox1.ResumeLayout(false); 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) { //改变按钮状态 button1.Enabled = false; button2.Enabled = true; //创建监听线程 listenThread = new Thread(new ThreadStart(StartListen)); //启动线程 listenThread.Start(); } private void StartListen() { try { tcpListener = new TcpListener(5675); //开始监听 tcpListener.Start(); //改变状态栏 statusBar1.Text = "正在监听..."; //设置监听状态 this.listen=true; while(listen) {// //接受连接请求// Socket s = tcpListener.AcceptSocket();// //设置一个缓冲区// Byte[] stream = new Byte[100];// int i=s.Receive(stream) ;// //将获得的流转化为字符串类型// string message = System.Text.Encoding.UTF8.GetString(stream);// this.richTextBox2.AppendText(message); //获取TcpClient TcpClient s=tcpListener.AcceptTcpClient(); NetworkStream nc=s.GetStream(); byte[] bytes = new byte[1024]; int bytesRead=nc.Read(bytes,0,bytes.Length); string message=System.Text.Encoding.Default.GetString(bytes,0,bytesRead); this.richTextBox2.AppendText(message); } } //错误处理 catch { //忽略错误处理 //改变状态栏 statusBar1.Text = "已停止监听!"; } } private void button2_Click(object sender, System.EventArgs e) { //改变按钮状态 this.button1.Enabled=true; this.button2.Enabled=false; //改变监听状态 this.listen=false; //停止监听器 this.tcpListener.Stop(); //停止监听线程 this.listenThread.Abort(); } private void button3_Click(object sender, System.EventArgs e) { try { //获得消息 string msg = "<"+this.textBox2.Text+">"+this.richTextBox1.Text+"\n"; //根据目标计算机地址建立连接 TcpClient tcpClient = new TcpClient(textBox1.Text, 5675); //获得用于网络访问的数据流 NetworkStream tcpStream = tcpClient.GetStream(); StreamWriter streamW = new StreamWriter(tcpStream); //将字符串写入流 streamW.Write(msg); //将缓冲数据写入基础流 streamW.Flush(); //关闭网络流 tcpStream.Close(); //关闭 tcpClient.Close(); this.richTextBox2.AppendText(msg); this.richTextBox1.Clear(); } catch { statusBar1.Text = "目标计算机拒绝连接请求!"; } } private void Form1_Closed(object sender, System.EventArgs e) { if (this.tcpListener!=null) { //关闭监听器 this.tcpListener.Stop(); } if (this.listenThread!=null) { //如果线程还处于运行状态就关闭它 if (this.listenThread.ThreadState==ThreadState.Running) { this.listenThread.Abort(); } } } }} C#反编译工具--能生成整页代码或解决方案 再求正则 C#的问题字符串问题 Richtextbox着色时的一个大缺陷 如何在两个窗体之间共享DataSet 关于对hashtable对象中数据修改的问题。~~~~~~~~~~~~ 如何在C#下显示内存的一张图片 窗口最小化后,重新回复所绘的图消失了,这个该怎么处理? Project 开发 请推荐个中文的C#论坛 求解:如何利用webclient下载 关于google APIs,最近是怎么了,
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;using System.Threading;
using System.Net.Sockets;
using System.IO;
namespace ch7_2
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.RichTextBox richTextBox1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.StatusBar statusBar1;
//代表监听的线程
private Thread listenThread;
//代表监听的状态
private bool listen=false;
//代表网络监听的对象
private TcpListener tcpListener; private System.Windows.Forms.RichTextBox richTextBox2; /// <summary>
/// 必需的设计器变量。
/// </summary>
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 Form Designer generated code
/// <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.richTextBox1 = new System.Windows.Forms.RichTextBox();
this.textBox1 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.label2 = new System.Windows.Forms.Label();
this.textBox2 = new System.Windows.Forms.TextBox();
this.button3 = new System.Windows.Forms.Button();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.statusBar1 = new System.Windows.Forms.StatusBar();
this.richTextBox2 = new System.Windows.Forms.RichTextBox();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// richTextBox1
//
this.richTextBox1.Location = new System.Drawing.Point(16, 8);
this.richTextBox1.Name = "richTextBox1";
this.richTextBox1.Size = new System.Drawing.Size(272, 40);
this.richTextBox1.TabIndex = 0;
this.richTextBox1.Text = "";
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(88, 20);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(176, 21);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "";
//
// label1
//
this.label1.Location = new System.Drawing.Point(16, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(72, 16);
this.label1.TabIndex = 2;
this.label1.Text = "目标地址";
//
// button1
//
this.button1.Location = new System.Drawing.Point(104, 56);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(72, 24);
this.button1.TabIndex = 3;
this.button1.Text = "准备接收";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Enabled = false;
this.button2.Location = new System.Drawing.Point(190, 56);
this.button2.Name = "button2";
this.button2.TabIndex = 4;
this.button2.Text = "停止接收";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// label2
//
this.label2.Location = new System.Drawing.Point(24, 62);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(72, 16);
this.label2.TabIndex = 5;
this.label2.Text = "请输入姓名";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(104, 56);
this.textBox2.Name = "textBox2";
this.textBox2.TabIndex = 6;
this.textBox2.Text = "";
//
// button3
//
this.button3.Location = new System.Drawing.Point(224, 56);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(56, 23);
this.button3.TabIndex = 7;
this.button3.Text = "发送";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.label1,
this.textBox1,
this.button1,
this.button2});
this.groupBox1.Location = new System.Drawing.Point(16, 192);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(272, 96);
this.groupBox1.TabIndex = 8;
this.groupBox1.TabStop = false;
// statusBar1
//
this.statusBar1.Location = new System.Drawing.Point(0, 303);
this.statusBar1.Name = "statusBar1";
this.statusBar1.Size = new System.Drawing.Size(296, 22);
this.statusBar1.TabIndex = 9;
//
// richTextBox2
//
this.richTextBox2.Location = new System.Drawing.Point(16, 88);
this.richTextBox2.Name = "richTextBox2";
this.richTextBox2.Size = new System.Drawing.Size(272, 96);
this.richTextBox2.TabIndex = 10;
this.richTextBox2.Text = "";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(296, 325);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.richTextBox2,
this.statusBar1,
this.groupBox1,
this.button3,
this.textBox2,
this.label2,
this.richTextBox1});
this.Name = "Form1";
this.Text = "点对点聊天";
this.Closed += new System.EventHandler(this.Form1_Closed);
this.groupBox1.ResumeLayout(false);
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)
{
//改变按钮状态
button1.Enabled = false;
button2.Enabled = true;
//创建监听线程
listenThread = new Thread(new ThreadStart(StartListen));
//启动线程
listenThread.Start();
} private void StartListen()
{
try
{
tcpListener = new TcpListener(5675);
//开始监听
tcpListener.Start();
//改变状态栏
statusBar1.Text = "正在监听...";
//设置监听状态
this.listen=true;
while(listen)
{
// //接受连接请求
// Socket s = tcpListener.AcceptSocket();
// //设置一个缓冲区
// Byte[] stream = new Byte[100];
// int i=s.Receive(stream) ;
// //将获得的流转化为字符串类型
// string message = System.Text.Encoding.UTF8.GetString(stream);
// this.richTextBox2.AppendText(message);
//获取TcpClient
TcpClient s=tcpListener.AcceptTcpClient();
NetworkStream nc=s.GetStream();
byte[] bytes = new byte[1024];
int bytesRead=nc.Read(bytes,0,bytes.Length);
string message=System.Text.Encoding.Default.GetString(bytes,0,bytesRead);
this.richTextBox2.AppendText(message);
}
}
//错误处理
catch
{
//忽略错误处理
//改变状态栏
statusBar1.Text = "已停止监听!";
}
} private void button2_Click(object sender, System.EventArgs e)
{
//改变按钮状态
this.button1.Enabled=true;
this.button2.Enabled=false;
//改变监听状态
this.listen=false;
//停止监听器
this.tcpListener.Stop();
//停止监听线程
this.listenThread.Abort();
} private void button3_Click(object sender, System.EventArgs e)
{
try
{
//获得消息
string msg = "<"+this.textBox2.Text+">"+this.richTextBox1.Text+"\n";
//根据目标计算机地址建立连接
TcpClient tcpClient = new TcpClient(textBox1.Text, 5675);
//获得用于网络访问的数据流
NetworkStream tcpStream = tcpClient.GetStream(); StreamWriter streamW = new StreamWriter(tcpStream);
//将字符串写入流
streamW.Write(msg);
//将缓冲数据写入基础流
streamW.Flush();
//关闭网络流
tcpStream.Close();
//关闭
tcpClient.Close();
this.richTextBox2.AppendText(msg);
this.richTextBox1.Clear();
}
catch
{
statusBar1.Text = "目标计算机拒绝连接请求!";
}
} private void Form1_Closed(object sender, System.EventArgs e)
{
if (this.tcpListener!=null)
{
//关闭监听器
this.tcpListener.Stop();
}
if (this.listenThread!=null)
{
//如果线程还处于运行状态就关闭它
if (this.listenThread.ThreadState==ThreadState.Running)
{
this.listenThread.Abort();
}
}
}
}
}