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

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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)

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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(, );

            this.panel1.Name = "panel1";

            this.panel1.Size = new System.Drawing.Size(, );

            this.panel1.TabIndex = ;

            //

            // tb_ip

            //

            this.tb_ip.Location = new System.Drawing.Point(, );

            this.tb_ip.Name = "tb_ip";

            this.tb_ip.Size = new System.Drawing.Size(, );

            this.tb_ip.TabIndex = ;

            this.tb_ip.Text = "127.0.0.1";

            //

            // lb_Ip

            //

            this.lb_Ip.AutoSize = true;

            this.lb_Ip.Location = new System.Drawing.Point(, );

            this.lb_Ip.Name = "lb_Ip";

            this.lb_Ip.Size = new System.Drawing.Size(, );

            this.lb_Ip.TabIndex = ;

            this.lb_Ip.Text = "IP:";

            //

            // lb_port

            //

            this.lb_port.AutoSize = true;

            this.lb_port.Location = new System.Drawing.Point(, );

            this.lb_port.Name = "lb_port";

            this.lb_port.Size = new System.Drawing.Size(, );

            this.lb_port.TabIndex = ;

            this.lb_port.Text = "Port:";

            //

            // tb_port

            //

            this.tb_port.Location = new System.Drawing.Point(, );

            this.tb_port.Name = "tb_port";

            this.tb_port.Size = new System.Drawing.Size(, );

            this.tb_port.TabIndex = ;

            this.tb_port.Text = "";

            //

            // bt_connnect

            //

            this.bt_connnect.Location = new System.Drawing.Point(, );

            this.bt_connnect.Name = "bt_connnect";

            this.bt_connnect.Size = new System.Drawing.Size(, );

            this.bt_connnect.TabIndex = ;

            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 = ;

            this.listBox1.Location = new System.Drawing.Point(, );

            this.listBox1.Name = "listBox1";

            this.listBox1.Size = new System.Drawing.Size(, );

            this.listBox1.TabIndex = ;

            //

            // txt_msg

            //

            this.txt_msg.Location = new System.Drawing.Point(, );

            this.txt_msg.Multiline = true;

            this.txt_msg.Name = "txt_msg";

            this.txt_msg.Size = new System.Drawing.Size(, );

            this.txt_msg.TabIndex = ;

            //

            // bt_send

            //

            this.bt_send.Location = new System.Drawing.Point(, );

            this.bt_send.Name = "bt_send";

            this.bt_send.Size = new System.Drawing.Size(, );

            this.bt_send.TabIndex = ;

            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(, );

            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)

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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();//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[ *  * ];

                     //实际接收到的有效字节数

                     int len = socketSend.Receive(buffer);

                     if (len == )

                     {

                         break;

                     }

                     string str = Encoding.UTF8.GetString(buffer, , 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 + "\r\n");

         }

         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

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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(, );

            this.panel1.Name = "panel1";

            this.panel1.Size = new System.Drawing.Size(, );

            this.panel1.TabIndex = ;

            //

            // lb_ip

            //

            this.lb_ip.AutoSize = true;

            this.lb_ip.Location = new System.Drawing.Point(, );

            this.lb_ip.Name = "lb_ip";

            this.lb_ip.Size = new System.Drawing.Size(, );

            this.lb_ip.TabIndex = ;

            this.lb_ip.Text = "IP:";

            //

            // txt_ip

            //

            this.txt_ip.Location = new System.Drawing.Point(, );

            this.txt_ip.Name = "txt_ip";

            this.txt_ip.Size = new System.Drawing.Size(, );

            this.txt_ip.TabIndex = ;

            this.txt_ip.Text = "127.0.0.1";

            //

            // txt_port

            //

            this.txt_port.Location = new System.Drawing.Point(, );

            this.txt_port.Name = "txt_port";

            this.txt_port.Size = new System.Drawing.Size(, );

            this.txt_port.TabIndex = ;

            this.txt_port.Text = "";

            //

            // lb_port

            //

            this.lb_port.AutoSize = true;

            this.lb_port.Location = new System.Drawing.Point(, );

            this.lb_port.Name = "lb_port";

            this.lb_port.Size = new System.Drawing.Size(, );

            this.lb_port.TabIndex = ;

            this.lb_port.Text = "port:";

            //

            // bt_connect

            //

            this.bt_connect.Location = new System.Drawing.Point(, );

            this.bt_connect.Name = "bt_connect";

            this.bt_connect.Size = new System.Drawing.Size(, );

            this.bt_connect.TabIndex = ;

            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(, );

            this.textBox1.Multiline = true;

            this.textBox1.Name = "textBox1";

            this.textBox1.Size = new System.Drawing.Size(, );

            this.textBox1.TabIndex = ;

            //

            // txt_msg

            //

            this.txt_msg.Location = new System.Drawing.Point(, );

            this.txt_msg.Multiline = true;

            this.txt_msg.Name = "txt_msg";

            this.txt_msg.Size = new System.Drawing.Size(, );

            this.txt_msg.TabIndex = ;

            //

            // bt_send

            //

            this.bt_send.Location = new System.Drawing.Point(, );

            this.bt_send.Name = "bt_send";

            this.bt_send.Size = new System.Drawing.Size(, );

            this.bt_send.TabIndex = ;

            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(, );

            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）

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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 + "\r\n");

         }

         /// <summary>

         /// 接收服务端返回的消息

         /// </summary>

         void Received()

         {

             while (true)

             {

                 try

                 {

                     byte[] buffer = new byte[ *  * ];

                     //实际接收到的有效字节数

                     int len = socketSend.Receive(buffer);

                     if (len == )

                     {

                         break;

                     }

                     string str = Encoding.UTF8.GetString(buffer, , 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[ *  * ];

                 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

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