简单的Socket通信(简单的在线聊天)---winform

注:本博客适合刚开始学习winform程序的初学者,大牛请绕道(跪求大牛指导文中不足)

.....10w字废话自动省略,直接开始正题.

首先从最基本的建立winform开始(本项目用的Vs2017)

 新建->项目->选中C#->选择Windows窗体应用->确定

创建完成后可以点击工具栏进行拖拽控件 ,双击控件进入事件的逻辑处理,右击鼠标选择属性进行配置

各属性的作用可参考微软文档     https://docs.microsoft.com/zh-cn/dotnet/api/system.windows.forms.control.accessiblename?view=netframework-4.8

首先展示一下效果图

注：

博主在一台电脑上创建了两个项目,打开两个VisualStudio（一个运行服务端，一个运行客户端），

由于socked端口占用问题，

服务端和客户端运行起来后，

         客户端IP输入自己电脑的IP->端口port随便输入->点击连接,提示连接成功。例：IP：192.168.1.23  port:80

         服务端IP输入自己电脑IP->端口port随便输入--->点击开始监听，提示监听成功。例：IP:192.168.1.23 port:81

         客户端IP输入自己电脑IP->端口port输入服务端端口号->点击连接,提示连接成功可以开始发送消息：例：IP:192.168.1.23 port:81

（从上到下按顺序执行）

以上操作是因为服务端、客户端在同一台电脑上，造成端口占用，  如果服务端和客户端分开的话客户端可以直接输入服务端ip和端口连接监听。

接下来贴代码:

服务端

↓↓↓↓↓

↓↓↓

↓↓

↓

Designer.cs文件代码     (小白不会设置控件属性的话,可以跳过拖拽控件,直接复制以下代码)

↓↓↓↓↓↓↓

↓↓↓↓

↓↓

↓

namespace Mywindows
{
    partial class Form1
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (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 - 不要修改
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.panel1 = new System.Windows.Forms.Panel();
            this.tb_ip = new System.Windows.Forms.TextBox();
            this.lb_Ip = new System.Windows.Forms.Label();
            this.lb_port = new System.Windows.Forms.Label();
            this.tb_port = new System.Windows.Forms.TextBox();
            this.bt_connnect = new System.Windows.Forms.Button();
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.txt_msg = new System.Windows.Forms.TextBox();
            this.bt_send = new System.Windows.Forms.Button();
            this.panel1.SuspendLayout();
            this.SuspendLayout();
            // 
            // panel1
            // 
            this.panel1.Controls.Add(this.bt_connnect);
            this.panel1.Controls.Add(this.lb_port);
            this.panel1.Controls.Add(this.tb_port);
            this.panel1.Controls.Add(this.lb_Ip);
            this.panel1.Controls.Add(this.tb_ip);
            this.panel1.Location = new System.Drawing.Point(21, 12);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(580, 70);
            this.panel1.TabIndex = 0;
            // 
            // tb_ip
            // 
            this.tb_ip.Location = new System.Drawing.Point(44, 18);
            this.tb_ip.Name = "tb_ip";
            this.tb_ip.Size = new System.Drawing.Size(100, 21);
            this.tb_ip.TabIndex = 0;
            this.tb_ip.Text = "127.0.0.1";
            // 
            // lb_Ip
            // 
            this.lb_Ip.AutoSize = true;
            this.lb_Ip.Location = new System.Drawing.Point(15, 21);
            this.lb_Ip.Name = "lb_Ip";
            this.lb_Ip.Size = new System.Drawing.Size(23, 12);
            this.lb_Ip.TabIndex = 1;
            this.lb_Ip.Text = "IP:";
            // 
            // lb_port
            // 
            this.lb_port.AutoSize = true;
            this.lb_port.Location = new System.Drawing.Point(158, 24);
            this.lb_port.Name = "lb_port";
            this.lb_port.Size = new System.Drawing.Size(35, 12);
            this.lb_port.TabIndex = 3;
            this.lb_port.Text = "Port:";
            // 
            // tb_port
            // 
            this.tb_port.Location = new System.Drawing.Point(199, 21);
            this.tb_port.Name = "tb_port";
            this.tb_port.Size = new System.Drawing.Size(100, 21);
            this.tb_port.TabIndex = 2;
            this.tb_port.Text = "80";
            // 
            // bt_connnect
            // 
            this.bt_connnect.Location = new System.Drawing.Point(316, 15);
            this.bt_connnect.Name = "bt_connnect";
            this.bt_connnect.Size = new System.Drawing.Size(132, 42);
            this.bt_connnect.TabIndex = 4;
            this.bt_connnect.Text = "开始监听";
            this.bt_connnect.UseVisualStyleBackColor = true;
            this.bt_connnect.Click += new System.EventHandler(this.bt_connnect_Click);
            // 
            // listBox1
            // 
            this.listBox1.FormattingEnabled = true;
            this.listBox1.ItemHeight = 12;
            this.listBox1.Location = new System.Drawing.Point(21, 112);
            this.listBox1.Name = "listBox1";
            this.listBox1.Size = new System.Drawing.Size(580, 124);
            this.listBox1.TabIndex = 1;
            // 
            // txt_msg
            // 
            this.txt_msg.Location = new System.Drawing.Point(21, 255);
            this.txt_msg.Multiline = true;
            this.txt_msg.Name = "txt_msg";
            this.txt_msg.Size = new System.Drawing.Size(424, 73);
            this.txt_msg.TabIndex = 2;
            // 
            // bt_send
            // 
            this.bt_send.Location = new System.Drawing.Point(471, 266);
            this.bt_send.Name = "bt_send";
            this.bt_send.Size = new System.Drawing.Size(119, 52);
            this.bt_send.TabIndex = 3;
            this.bt_send.Text = "发送";
            this.bt_send.UseVisualStyleBackColor = true;
            this.bt_send.Click += new System.EventHandler(this.bt_send_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(695, 340);
            this.Controls.Add(this.bt_send);
            this.Controls.Add(this.txt_msg);
            this.Controls.Add(this.listBox1);
            this.Controls.Add(this.panel1);
            this.Name = "Form1";
            this.Text = "SocketForm";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.panel1.ResumeLayout(false);
            this.panel1.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();
        }
        #endregion
        private System.Windows.Forms.Panel panel1;
         private System.Windows.Forms.Button bt_connnect;
         private System.Windows.Forms.Label lb_port;
         private System.Windows.Forms.TextBox tb_port;
         private System.Windows.Forms.Label lb_Ip;
         private System.Windows.Forms.TextBox tb_ip;
         private System.Windows.Forms.ListBox listBox1;
         private System.Windows.Forms.TextBox txt_msg;
         private System.Windows.Forms.Button bt_send;

    }
}

 控件事件逻辑处理   (小白可以随便选中一个控件双击进去, 直接将下面的代码覆盖到项目中)

↓↓↓↓↓↓↓

↓↓↓↓

↓↓

↓

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 Mywindows
{
    partial class Form1 : Form
    {

        public Form1()
         {
             InitializeComponent();
         }
 
         private void bt_connnect_Click(object sender, EventArgs e)
         {
 
             try
             {
                 //点击开始监听时 在服务端创建一个负责监听IP和端口号的Socket
                 Socket socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                 IPAddress ip = IPAddress.Any;
                 //创建对象端口
                 IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(tb_port.Text));
 
                 socketWatch.Bind(point);//绑定端口号
                 ShowMsg("监听成功!");
                 socketWatch.Listen(10);//设置监听
 
                 //创建监听线程
                 Thread thread = new Thread(Listen);
                 thread.IsBackground = true;
                 thread.Start(socketWatch);
             }
             catch { }
            
         }
        
         /// <summary>
         /// 等待客户端的连接 并且创建与之通信的Socket
         /// </summary>
         Socket socketSend;
         void Listen(object o)
         {
             try
             {
                 Socket socketWatch = o as Socket;
                 while (true)
                 {
                    
                     socketSend = socketWatch.Accept();//等待接收客户端连接
                     ShowMsg(socketSend.RemoteEndPoint.ToString() + ":" + "连接成功!");
                     //开启一个新线程，执行接收消息方法
                     Thread r_thread = new Thread(Received);
                     r_thread.IsBackground = true;
                     r_thread.Start(socketSend);
                 }
             }
             catch { }
         }
         /// <summary>
         /// 服务器端不停的接收客户端发来的消息
         /// </summary>
         /// <param name="o"></param>
         void Received(object o)
         {
             try
             {
                 Socket socketSend = o as Socket;
                 while (true)
                 {
                     //客户端连接服务器成功后，服务器接收客户端发送的消息
                     byte[] buffer = new byte[1024 * 1024 * 3];
                     //实际接收到的有效字节数
                     int len = socketSend.Receive(buffer);
                     if (len == 0)
                     {
                         break;
                     }
                     string str = Encoding.UTF8.GetString(buffer, 0, len);
                     ShowMsg(socketSend.RemoteEndPoint + ":" + str);
                 }
             }
             catch { }
         }
         /// <summary>
         /// 服务器向客户端发送消息
         /// </summary>
         /// <param name="str"></param>
         void Send(string str)
{
                 byte[] buffer = Encoding.UTF8.GetBytes(str);
                 socketSend.Send(buffer);
             }
 
         void ShowMsg(string msg)
         {
             listBox1.Items.Add(msg + "
");
         }
 
         private void Form1_Load(object sender, EventArgs e)
         {
             Control.CheckForIllegalCrossThreadCalls = false;
         }
 
         private void bt_send_Click(object sender, EventArgs e)
         {
             Send(txt_msg.Text.Trim());
         }

    }
}

 客户端

↓↓↓↓↓↓

↓↓↓

↓↓

↓

namespace MyClient
{
    partial class Form1
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (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 - 不要修改
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.panel1 = new System.Windows.Forms.Panel();
            this.lb_ip = new System.Windows.Forms.Label();
            this.txt_ip = new System.Windows.Forms.TextBox();
            this.txt_port = new System.Windows.Forms.TextBox();
            this.lb_port = new System.Windows.Forms.Label();
            this.bt_connect = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.txt_msg = new System.Windows.Forms.TextBox();
            this.bt_send = new System.Windows.Forms.Button();
            this.panel1.SuspendLayout();
            this.SuspendLayout();
            // 
            // panel1
            // 
            this.panel1.Controls.Add(this.bt_connect);
            this.panel1.Controls.Add(this.txt_port);
            this.panel1.Controls.Add(this.lb_port);
            this.panel1.Controls.Add(this.txt_ip);
            this.panel1.Controls.Add(this.lb_ip);
            this.panel1.Location = new System.Drawing.Point(12, 12);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(463, 75);
            this.panel1.TabIndex = 0;
            // 
            // lb_ip
            // 
            this.lb_ip.AutoSize = true;
            this.lb_ip.Location = new System.Drawing.Point(14, 23);
            this.lb_ip.Name = "lb_ip";
            this.lb_ip.Size = new System.Drawing.Size(23, 12);
            this.lb_ip.TabIndex = 0;
            this.lb_ip.Text = "IP:";
            // 
            // txt_ip
            // 
            this.txt_ip.Location = new System.Drawing.Point(43, 20);
            this.txt_ip.Name = "txt_ip";
            this.txt_ip.Size = new System.Drawing.Size(100, 21);
            this.txt_ip.TabIndex = 1;
            this.txt_ip.Text = "127.0.0.1";
            // 
            // txt_port
            // 
            this.txt_port.Location = new System.Drawing.Point(207, 23);
            this.txt_port.Name = "txt_port";
            this.txt_port.Size = new System.Drawing.Size(100, 21);
            this.txt_port.TabIndex = 3;
            this.txt_port.Text = "2001";
            // 
            // lb_port
            // 
            this.lb_port.AutoSize = true;
            this.lb_port.Location = new System.Drawing.Point(166, 29);
            this.lb_port.Name = "lb_port";
            this.lb_port.Size = new System.Drawing.Size(35, 12);
            this.lb_port.TabIndex = 2;
            this.lb_port.Text = "port:";
            // 
            // bt_connect
            // 
            this.bt_connect.Location = new System.Drawing.Point(313, 9);
            this.bt_connect.Name = "bt_connect";
            this.bt_connect.Size = new System.Drawing.Size(113, 47);
            this.bt_connect.TabIndex = 4;
            this.bt_connect.Text = "连接";
            this.bt_connect.UseVisualStyleBackColor = true;
            this.bt_connect.Click += new System.EventHandler(this.bt_connect_Click);
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(12, 103);
            this.textBox1.Multiline = true;
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(463, 114);
            this.textBox1.TabIndex = 1;
            // 
            // txt_msg
            // 
            this.txt_msg.Location = new System.Drawing.Point(12, 246);
            this.txt_msg.Multiline = true;
            this.txt_msg.Name = "txt_msg";
            this.txt_msg.Size = new System.Drawing.Size(291, 54);
            this.txt_msg.TabIndex = 2;
            // 
            // bt_send
            // 
            this.bt_send.Location = new System.Drawing.Point(325, 246);
            this.bt_send.Name = "bt_send";
            this.bt_send.Size = new System.Drawing.Size(113, 54);
            this.bt_send.TabIndex = 3;
            this.bt_send.Text = "发送";
            this.bt_send.UseVisualStyleBackColor = true;
            this.bt_send.Click += new System.EventHandler(this.bt_send_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(493, 323);
            this.Controls.Add(this.bt_send);
            this.Controls.Add(this.txt_msg);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.panel1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.panel1.ResumeLayout(false);
            this.panel1.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.Panel panel1;
        private System.Windows.Forms.Label lb_ip;
        private System.Windows.Forms.Button bt_connect;
        private System.Windows.Forms.TextBox txt_port;
        private System.Windows.Forms.Label lb_port;
        private System.Windows.Forms.TextBox txt_ip;
        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.TextBox txt_msg;
        private System.Windows.Forms.Button bt_send;

    }
}

双击控件进入（.cs文件）

↓↓↓↓↓↓↓

↓↓↓↓

↓

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.Windows.Forms;

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

               Socket socketSend;
         private void bt_connect_Click(object sender, EventArgs e)
         {
             try
             {
                 //创建客户端Socket，获得远程ip和端口号
                 socketSend = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                 IPAddress ip = IPAddress.Parse(txt_ip.Text);
                 IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(txt_port.Text));
 
                 socketSend.Connect(point);
                 ShowMsg("连接成功!");
                 //开启新的线程，不停的接收服务器发来的消息
                 Thread c_thread = new Thread(Received);
                 c_thread.IsBackground = true;
                 c_thread.Start();
             }
             catch (Exception){
                 ShowMsg("IP或者端口号错误...");
             }
  
         }
         void ShowMsg(string str)
         {
             textBox1.AppendText(str + "
");
         }
         /// <summary>
         /// 接收服务端返回的消息
         /// </summary>
         void Received()
         {
             while (true)
             {
                 try
                 {
                     byte[] buffer = new byte[1024 * 1024 * 3];
                     //实际接收到的有效字节数
                     int len = socketSend.Receive(buffer);
                     if (len == 0)
                     {
                         break;
                     }
                     string str = Encoding.UTF8.GetString(buffer, 0, len);
                     ShowMsg(socketSend.RemoteEndPoint + ":" + str);
                 }
                 catch { }
             }
         } 
         /// <summary>
         /// 向服务器发送消息
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void bt_send_Click(object sender, EventArgs e)
         {
             try
             {
                 string msg = txt_msg.Text.Trim();
                 byte[] buffer = new byte[1024 * 1024 * 3];
                 buffer = Encoding.UTF8.GetBytes(msg);
                 socketSend.Send(buffer);
             }
             catch { }
         }
 
         private void Form1_Load(object sender, EventArgs e)
         {
             Control.CheckForIllegalCrossThreadCalls = false;
         }
    }
}

项目地址

链接：https://pan.baidu.com/s/19UJ7T3LC5Y7TatOnaJXLkQ
提取码：g811