C#实现串口通信

使用c#编程实现计算机串口通信，纯代码，实现发送数据，接受数据

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
namespace ChuanKouTongXing
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }

        SerialPort sp = new SerialPort（）;
        public static string strPortName;
        public static string strBaudRate;

        public static string strDataBits;
        public static string strStopBits;

        bool isOpen = true;

        void sp_DataReceived（object sender SerialDataReceivedEventArgs e）  //定以接收数据的函数
        {
            int count = sp.BytesToRead;   //将byte数据换成字符串窗口显示
            byte[] ReceicvedBuf = new byte[count];
            sp.Read（ReceicvedBuf 0 count）;
            //直接转换成字符形式
      if （radioButton1.Checked）
      {
          string strReceive3 = System.Text.Encoding.Default.GetString（ReceicvedBuf）;
          Invoke（new MethodInvoker（delegate（）
       {
              txtRecieve.Text+=strReceive3 ;
       }））;
      }
        
           //直接转换16形式显示
           if （radioButton2.Checked）
      {
          Invoke（new MethodInvoker（delegate（）
             {
                 txtRecieve.Text += byteToHexStr（ReceicvedBuf）;
             }））;
      }

   
        }

        public static string byteToHexStr（byte[] bytes）
        {
            string returnStr = ““;
            if （bytes != null）
            {
                for （int i = 0; i < bytes.Length; i++）
                {
                    returnStr += bytes[i].ToString（“X2“）;

                }
            }

            return returnStr;
            
        }


        private void label1_Click（object sender EventArgs e）
        {

        }

        private void label2_Click（object sender EventArgs e）
        {

        }

        private void textBox2_TextChanged（object sender EventArgs e）
        {

        }



        private byte[] strToHexByte（String hexString）  //字符转16进制
        {

            hexString = hexString.Replace（“ “ ““）;
            if （（hexString.Length % 2） != 0）
                hexString += “ “;

            byte[] returnBytes = new byte[（hexString.Length / 2）];
            for （int i = 0; i < returnBytes.Length; i++）


                returnBytes[i] = Convert.ToByte（hexString.Substring（i * 2 2）.Replace（“ “ ““） 16）;
            return returnBytes;

        }


        private void Form1_Load（object sender EventArgs e）
        {
            for （int j = 1; j < 10; j++）
            {
                cmbPoint.Items.Add（“COM“ + j）;
            }
            cmbPoint.SelectedIndex = 0;

            cmbBaudRate.Items.Add（1200）;
            cmbBaudRate.Items.Add（2400）;
            cmbBaudRate.Items.Add（4800）;
            cmbBaudRate.It

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-07-22 20:14  ChuanKouTongXing\
     目录           0  2018-07-22 20:15  ChuanKouTongXing\ChuanKouTongXing\
     文件         938  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing.sln
     文件       36352  2018-07-23 19:51  ChuanKouTongXing\ChuanKouTongXing.v11.suo
     文件         187  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing\App.config
     目录           0  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing\bin\
     目录           0  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\bin\Debug\
     文件       14848  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\bin\Debug\ChuanKouTongXing.exe
     文件         187  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing\bin\Debug\ChuanKouTongXing.exe.config
     文件       28160  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\bin\Debug\ChuanKouTongXing.pdb
     文件       22984  2018-07-23 19:37  ChuanKouTongXing\ChuanKouTongXing\bin\Debug\ChuanKouTongXing.vshost.exe
     文件         187  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing\bin\Debug\ChuanKouTongXing.vshost.exe.config
     文件         490  2010-03-17 22:39  ChuanKouTongXing\ChuanKouTongXing\bin\Debug\ChuanKouTongXing.vshost.exe.manifest
     文件        3811  2018-07-22 21:10  ChuanKouTongXing\ChuanKouTongXing\ChuanKouTongXing.csproj
     文件        5800  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\Form1.cs
     文件       12405  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\Form1.Designer.cs
     文件        5817  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\Form1.resx
     目录           0  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing\obj\
     目录           0  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\
     文件         726  2018-07-23 19:37  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\ChuanKouTongXing.csproj.FileListAbsolute.txt
     文件         975  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\ChuanKouTongXing.csproj.GenerateResource.Cache
     文件        2209  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\ChuanKouTongXing.csprojResolveAssemblyReference.cache
     文件       14848  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\ChuanKouTongXing.exe
     文件         180  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\ChuanKouTongXing.Form1.resources
     文件       28160  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\ChuanKouTongXing.pdb
     文件         180  2018-07-23 17:07  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\ChuanKouTongXing.Properties.Resources.resources
     文件        1308  2018-07-23 10:12  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\DesignTimeResolveAssemblyReferences.cache
     文件        6951  2018-07-22 20:15  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
     文件           0  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs
     文件           0  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs
     文件           0  2018-07-22 20:14  ChuanKouTongXing\ChuanKouTongXing\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs
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