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   源码介绍

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using System;
using System.Collections.Generic;
using System.ComponentModel;

using System.Windows.Forms;
using System.Threading;

namespace 简单的串口程序
{
    public partial class Form1 : Form
    {
        byte[] byteData;
        Thread receviceThread;
        bool receviceFlag = true;
        private delegate void delegateSetText(string str);
        private delegate void delegatest(string str);
        private delegate void dalist(string str);
        private delegate void byyy(byte[] byt);
        public Form1()
        {
            InitializeComponent();
            string[] serialPortlist = System.IO.Ports.SerialPort.GetPortNames();

            for (int i = 0; i < serialPortlist.Length; i  )
            {
                string name = serialPortlist[i];
                comboBoxPort.Items.Add(name);
            }                   
         
        }
        /// <summary>
        /// 线程安全性
        /// </summary>
        /// <param name="Text"></param>
        void SetText(string Text)
        {
            if (textBoxRecevie.InvokeRequired)
            {
                delegateSetText d = new delegateSetText(SetText);
                this.Invoke(d, new object[] { Text });
            }
            else
                textBoxRecevie.AppendText(Text   "\r\n");
        }
      
    
      

        private void buttonOpenOrClose_Click(object sender, EventArgs e)
        {
            try
            {
                if (serialPort.IsOpen)
                {
                    receviceThread.Abort();
                    receviceThread.Join();
                    serialPort.Close();
                    buttonOpenOrClose.Text = "打开串口";
                }
                else
                {
                    serialPort.PortName = comboBoxPort.SelectedItem.ToString();
                    serialPort.BaudRate = 9600;                  
                    receviceThread = new Thread(ReadData);
                    serialPort.Open();
                    receviceThread.Start();
                    buttonOpenOrClose.Text = "关闭串口";
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }



        void ReadData()
        {
            while (receviceFlag)
            {
                if ((serialPort.BytesToRead != 0) && serialPort.IsOpen)
                {
                    //receviceThread.IsBackground = true;
                    byteData = new byte[serialPort.BytesToRead];
                    serialPort.Read(byteData, 0, byteData.Length);
                    //string str = Encoding.UTF8.GetString(byteData) ;
                    string str = BitConverter.ToString(byteData).Replace('-', ' ');
                    SetText(str);               
                }
            }
        }

    
        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (receviceThread != null)
            {
                if (receviceThread.IsAlive)
                {
                    receviceThread.Abort();
                    receviceThread.Join();
                }
            }
        }
     

        private void Form1_Load(object sender, EventArgs e)
        {
          
        }

        private void label1_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data= new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xC9;
            data[6] = 0x5c;
            data[7] = 0x42;

            serialPort.Write(data,0,data.Length);            
        }

        private void button2_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data = new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xCa;
            data[6] = 0x1c;
            data[7] = 0x43;

            serialPort.Write(data, 0, data.Length);
        }

        private void button9_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data = new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xd1;
            data[6] = 0x5c;
            data[7] = 0x48;

            serialPort.Write(data, 0, data.Length);
        }

        private void button8_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data = new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xd0;
            data[6] = 0x9d;
            data[7] = 0x88;

            serialPort.Write(data, 0, data.Length);
        }

        private void button7_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data = new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xCf;
            data[6] = 0xdc;
            data[7] = 0x40;

            serialPort.Write(data, 0, data.Length);
        }

        private void button6_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data = new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xCe;
            data[6] = 0x1d;
            data[7] = 0x80;

            serialPort.Write(data, 0, data.Length);
        }

        private void button5_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data = new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xCd;
            data[6] = 0x5d;
            data[7] = 0x81;

            serialPort.Write(data, 0, data.Length);
        }

        private void button4_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data = new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xCc;
            data[6] = 0x9c;
            data[7] = 0x41;

            serialPort.Write(data, 0, data.Length);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            textBoxRecevie.Clear();
            Byte[] data = new Byte[8];
            data[0] = 0xFF;
            data[1] = 0x06;
            data[2] = 0x00;
            data[3] = 0x00;
            data[4] = 0x00;
            data[5] = 0xCb;
            data[6] = 0xdd;
            data[7] = 0x83;

            serialPort.Write(data, 0, data.Length);
        }

    }
}