C#结合串口通信类实现串口通信源代码（原创）

mycom是串口通信类，在本blog前一篇中有完整代码。( C#串口通信编程类(修改版) )

下面是串口通讯测试程序的源代码，将mycom类放在此项目中

可以实现简单的串口通信，希望读者能通过这个程序对串口通信过程有一个初步的了解：

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

using System.Threading;

namespace BusApp

{

/// <summary>

/// Form1 的摘要说明。

/// </summary>

public class Form1 : System.Windows.Forms.Form

{

private System.Windows.Forms.Label label1;

private System.Windows.Forms.Label label2;

private System.Windows.Forms.Button button1;

private System.Windows.Forms.GroupBox groupBox1;

private System.Windows.Forms.Label label3;

private System.Windows.Forms.Label label4;

private System.Windows.Forms.Label label5;

private System.Windows.Forms.Label label6;

private System.Windows.Forms.Button button2;

private System.Windows.Forms.Button button3;

private System.Windows.Forms.Button button4;

private System.Windows.Forms.TextBox textBox8;

private System.Windows.Forms.Label label7;

public int iPort=1; //1,2,3,4

public int iRate=9600; //1200,2400,4800,9600

public byte bSize=8; //8 bits

public byte bParity=0; // 0-4=no,odd,even,mark,space

public byte bStopBits=1; // 0,1,2 = 1, 1.5, 2

public int iTimeout=1000;

public mycom mycom1=new mycom();

public byte[] recb;

private System.Windows.Forms.TextBox msg;

private System.Windows.Forms.TextBox t_port;

private System.Windows.Forms.TextBox t_rate;

private System.Windows.Forms.TextBox t_bytesize;

private System.Windows.Forms.TextBox t_stopbyte;

private System.Windows.Forms.TextBox t_parity;

private System.Windows.Forms.TextBox t_send;

private System.Windows.Forms.Button button5; //readTimeOut

/// <summary>

/// 必需的设计器变量。

/// </summary>

private System.ComponentModel.Container components = null;

public Form1()

{

InitializeComponent();

}

/// <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.msg = new System.Windows.Forms.TextBox();

this.label1 = new System.Windows.Forms.Label();

this.label2 = new System.Windows.Forms.Label();

this.t_send = new System.Windows.Forms.TextBox();

this.button1 = new System.Windows.Forms.Button();

this.groupBox1 = new System.Windows.Forms.GroupBox();

this.button2 = new System.Windows.Forms.Button();

this.t_port = new System.Windows.Forms.TextBox();

this.label3 = new System.Windows.Forms.Label();

this.t_rate = new System.Windows.Forms.TextBox();

this.label4 = new System.Windows.Forms.Label();

this.t_bytesize = new System.Windows.Forms.TextBox();

this.label5 = new System.Windows.Forms.Label();

this.t_stopbyte = new System.Windows.Forms.TextBox();

this.label6 = new System.Windows.Forms.Label();

this.t_parity = new System.Windows.Forms.TextBox();

this.button3 = new System.Windows.Forms.Button();

this.button4 = new System.Windows.Forms.Button();

this.textBox8 = new System.Windows.Forms.TextBox();

this.label7 = new System.Windows.Forms.Label();

this.button5 = new System.Windows.Forms.Button();

this.groupBox1.SuspendLayout();

this.SuspendLayout();

//

// msg

//

this.msg.ForeColor = System.Drawing.Color.Green;

this.msg.Location = new System.Drawing.Point(0, 0);

this.msg.Multiline = true;

this.msg.Name = "msg";

this.msg.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;

this.msg.Size = new System.Drawing.Size(512, 264);

this.msg.TabIndex = 0;

this.msg.Text = "";

//

// label1

//

this.label1.Location = new System.Drawing.Point(16, 24);

this.label1.Name = "label1";

this.label1.Size = new System.Drawing.Size(56, 16);

this.label1.TabIndex = 1;

this.label1.Text = "串口号：";

//

// label2

//

this.label2.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0)));

this.label2.Location = new System.Drawing.Point(8, 280);

this.label2.Name = "label2";

this.label2.Size = new System.Drawing.Size(80, 16);

this.label2.TabIndex = 1;

this.label2.Text = "设置数据包：";

//

// t_send

//

this.t_send.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;

this.t_send.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(128)), ((System.Byte)(0)));

this.t_send.Location = new System.Drawing.Point(80, 272);

this.t_send.Name = "t_send";

this.t_send.Size = new System.Drawing.Size(344, 21);

this.t_send.TabIndex = 2;

this.t_send.Text = "";

//

// button1

//

this.button1.Location = new System.Drawing.Point(432, 272);

this.button1.Name = "button1";

this.button1.Size = new System.Drawing.Size(40, 23);

this.button1.TabIndex = 3;

this.button1.Text = "发送";

this.button1.Click += new System.EventHandler(this.button1_Click);

//

// groupBox1

//

this.groupBox1.Controls.Add(this.button2);

this.groupBox1.Controls.Add(this.t_port);

this.groupBox1.Controls.Add(this.label1);

this.groupBox1.Controls.Add(this.label3);

this.groupBox1.Controls.Add(this.t_rate);

this.groupBox1.Controls.Add(this.label4);

this.groupBox1.Controls.Add(this.t_bytesize);

this.groupBox1.Controls.Add(this.label5);

this.groupBox1.Controls.Add(this.t_stopbyte);

this.groupBox1.Controls.Add(this.label6);

this.groupBox1.Controls.Add(this.t_parity);

this.groupBox1.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(64)), ((System.Byte)(0)));

this.groupBox1.Location = new System.Drawing.Point(8, 304);

this.groupBox1.Name = "groupBox1";

this.groupBox1.Size = new System.Drawing.Size(176, 216);

this.groupBox1.TabIndex = 4;

this.groupBox1.TabStop = false;

this.groupBox1.Text = "参数设置";

//

// button2

//

this.button2.FlatStyle = System.Windows.Forms.FlatStyle.Popup;

this.button2.Location = new System.Drawing.Point(80, 184);

this.button2.Name = "button2";

this.button2.TabIndex = 3;

this.button2.Text = "应用设置";

this.button2.Click += new System.EventHandler(this.button2_Click);

//

// t_port

//

this.t_port.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;

this.t_port.Location = new System.Drawing.Point(80, 16);

this.t_port.Name = "t_port";

this.t_port.Size = new System.Drawing.Size(80, 21);

this.t_port.TabIndex = 2;

this.t_port.Text = "1";

//

// label3

//

this.label3.Location = new System.Drawing.Point(16, 58);

this.label3.Name = "label3";

this.label3.Size = new System.Drawing.Size(56, 16);

this.label3.TabIndex = 1;

this.label3.Text = "波特率：";

//

// t_rate

//

this.t_rate.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;

this.t_rate.Location = new System.Drawing.Point(80, 50);

this.t_rate.Name = "t_rate";

this.t_rate.Size = new System.Drawing.Size(80, 21);

this.t_rate.TabIndex = 2;

this.t_rate.Text = "9600";

//

// label4

//

this.label4.Location = new System.Drawing.Point(16, 92);

this.label4.Name = "label4";

this.label4.Size = new System.Drawing.Size(56, 16);

this.label4.TabIndex = 1;

this.label4.Text = "数据位：";

//

// t_bytesize

//

this.t_bytesize.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;

this.t_bytesize.Location = new System.Drawing.Point(80, 84);

this.t_bytesize.Name = "t_bytesize";

this.t_bytesize.Size = new System.Drawing.Size(80, 21);

this.t_bytesize.TabIndex = 2;

this.t_bytesize.Text = "8";

//

// label5

//

this.label5.Location = new System.Drawing.Point(16, 126);

this.label5.Name = "label5";

this.label5.Size = new System.Drawing.Size(56, 16);

this.label5.TabIndex = 1;

this.label5.Text = "停止位：";

//

// t_stopbyte

//

this.t_stopbyte.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;

this.t_stopbyte.Location = new System.Drawing.Point(80, 118);

this.t_stopbyte.Name = "t_stopbyte";

this.t_stopbyte.Size = new System.Drawing.Size(80, 21);

this.t_stopbyte.TabIndex = 2;

this.t_stopbyte.Text = "1";

//

// label6

//

this.label6.Location = new System.Drawing.Point(16, 160);

this.label6.Name = "label6";

this.label6.Size = new System.Drawing.Size(56, 16);

this.label6.TabIndex = 1;

this.label6.Text = "校验位：";

//

// t_parity

//

this.t_parity.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;

this.t_parity.Enabled = false;

this.t_parity.Location = new System.Drawing.Point(80, 152);

this.t_parity.Name = "t_parity";

this.t_parity.Size = new System.Drawing.Size(80, 21);

this.t_parity.TabIndex = 2;

this.t_parity.Text = "0";

//

// button3

//

this.button3.Location = new System.Drawing.Point(472, 272);

this.button3.Name = "button3";

this.button3.Size = new System.Drawing.Size(40, 23);

this.button3.TabIndex = 3;

this.button3.Text = "清空";

this.button3.Click += new System.EventHandler(this.button3_Click);

//

// button4

//

this.button4.FlatStyle = System.Windows.Forms.FlatStyle.Popup;

this.button4.Location = new System.Drawing.Point(432, 312);

this.button4.Name = "button4";

this.button4.Size = new System.Drawing.Size(72, 23);

this.button4.TabIndex = 6;

this.button4.Text = "初始化";

//

// textBox8

//

this.textBox8.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;

this.textBox8.ForeColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(128)), ((System.Byte)(0)));

this.textBox8.Location = new System.Drawing.Point(288, 312);

this.textBox8.Name = "textBox8";

this.textBox8.Size = new System.Drawing.Size(136, 21);

this.textBox8.TabIndex = 7;

this.textBox8.Text = "";

//

// label7

//

this.label7.Location = new System.Drawing.Point(200, 320);

this.label7.Name = "label7";

this.label7.Size = new System.Drawing.Size(100, 16);

this.label7.TabIndex = 8;

this.label7.Text = "设置本机地址：";

//

// button5

//

this.button5.FlatStyle = System.Windows.Forms.FlatStyle.Popup;

this.button5.Location = new System.Drawing.Point(440, 504);

this.button5.Name = "button5";

this.button5.Size = new System.Drawing.Size(64, 23);

this.button5.TabIndex = 9;

this.button5.Text = "关闭串口";

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, 533);

this.Controls.Add(this.button5);

this.Controls.Add(this.textBox8);

this.Controls.Add(this.label7);

this.Controls.Add(this.button4);

this.Controls.Add(this.groupBox1);

this.Controls.Add(this.button1);

this.Controls.Add(this.t_send);

this.Controls.Add(this.msg);

this.Controls.Add(this.label2);

this.Controls.Add(this.button3);

this.Name = "Form1";

this.Text = "串口通讯（小y设计）";

this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);

this.Load += new System.EventHandler(this.Form1_Load);

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());

}

//程序开启，串口初始化

private void Form1_Load(object sender, System.EventArgs e)

{

mycom1.PortNum=iPort;

mycom1.BaudRate=iRate;

mycom1.ByteSize=bSize;

mycom1.Parity=bParity;

mycom1.StopBits=bStopBits;

mycom1.ReadTimeout=iTimeout;

if(this.OpenCom())

msg.AppendText("串口初始化成功……\r\n");

else

msg.AppendText("串口初始化失败！\r\n");

}

//显示包信息

public string dis_package(byte[] reb)

{

string temp="";

foreach(byte b in reb)

temp+=b.ToString("X2")+" ";

return temp;

}

//开串口

public bool OpenCom()

{

try

{

　 if (mycom1.Opened)

　 {

　　 mycom1.Close();

　　 mycom1.Open(); //打开串口

　 }

　 else

　 {

　　 mycom1.Open();//打开串口

　 }

　 return true;

}

catch(Exception e)

{

　 MessageBox.Show("错误：" + e.Message);

　 return false;

}

}

//发送按钮

private void button1_Click(object sender, System.EventArgs e)

{

if(t_send.Text=="")

{MessageBox.Show("发送数据为空！");return;}

byte[] temp1=mysendb();

int sendnumb=0;

try

{

sendnumb=mycom1.Write(temp1);

msg.AppendText("\r\n发送数据("+sendnumb+")："+dis_package(temp1));

recb=mycom1.Read(50);

//if(recb.Length!=0)

msg.AppendText("\r\n接收到数据包："+dis_package(recb));

}

catch

{msg.AppendText("\r\n发送失败！");return;}

//OpenCom();

}

//去掉发送数组中的空格

public string delspace(string putin)

{

string putout="";

for(int i=0;i<putin.Length;i++)

{

if(putin[i]!=' ')

putout+=putin[i];

}

return putout;

}

//提取数据包

public byte[] mysendb()

{

string temps=delspace(t_send.Text);

byte[] tempb=new byte[50];

int j=0;

for(int i=0;i<temps.Length;i=i+2,j++)

tempb[j]=Convert.ToByte(temps.Substring(i,2),16);

byte[] send=new byte[j];

Array.Copy(tempb,send,j);

return send;

}

//清空按钮

private void button3_Click(object sender, System.EventArgs e)

{

t_send.Text=string.Empty;

msg.Text=string.Empty;

}

//参数设置

private void button2_Click(object sender, System.EventArgs e)

{

mycom1.PortNum=Convert.ToInt16(t_port.Text); //1,2,3,4

mycom1.BaudRate=Convert.ToInt16(t_rate.Text); //1200,2400,4800,9600

mycom1.ByteSize=Convert.ToByte(t_bytesize.Text,10); //8 bits

mycom1.Parity=Convert.ToByte(t_parity.Text,10); // 0-4=no,odd,even,mark,space

mycom1.StopBits=Convert.ToByte(t_stopbyte.Text,10); // 0,1,2 = 1, 1.5, 2

//iTimeout=3;

if(this.OpenCom())

msg.AppendText("串口初始化成功……\r\n");

else

msg.AppendText("串口初始化失败！\r\n");

}

//程序关闭，结束串口

private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)

{

mycom1.Close();

}

private void button5_Click(object sender, System.EventArgs e)

{

if(mycom1.Opened)

{

mycom1.Close();

button5.Text="开启串口";

msg.AppendText("\r\n串口被关闭……");

}

else

{

mycom1.Open();

button5.Text="关闭串口";

msg.AppendText("\r\n串口成功开启……");

}

}

}

}

注意：发送数据包的格式是16进制数据如：02 45 66 FA 中间可以有或者没有空格，但要保证有偶数位

TO 大家：

该程序源码已经放到本blog第一篇提供下载。