C#使用RS232串口通讯

完整的RS232串口通讯示例

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO.Ports;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace RS232串口通讯CSharp
{
    public partial class frmTest : Form
    {
        public frmTest（）
        {
            InitializeComponent（）;
        }

        /// 

        /// SerialPort串行端口
        /// 

        private SerialPort Com_SerialPort = new SerialPort（）;
        /// 

        /// 是否没有执行完invoke相关操作
        /// 

        private bool IsListening = false;
        /// 

        /// 是否正在关闭串口，执行Application.DoEvents，并阻止再次invoke
        /// 

        private bool IsClosing = false;
        private void button1_Click（object sender EventArgs e）
        {
            //MCJS50.ReadValue（Com_SerialPort）;
            //MessageBox.Show（MCJS50.intJs.ToString（））;

           

        }

        void Com_SerialPort_DataReceived（object sender SerialDataReceivedEventArgs e）
        {
            if （IsClosing） { return; }
            try
            {
                if （Com_SerialPort.BytesToRead <= 0） return;
                Thread.Sleep（50）;
                IsListening = true;
                int intBytesToRead = Com_SerialPort.BytesToRead;
                byte[] buffer = new byte[intBytesToRead];
                Com_SerialPort.Read（buffer 0 intBytesToRead）;
                if （buffer.Length >= 6）
                {
                    if （buffer[0] == 0xAC && buffer[buffer.Length - 1] == 0x84）
                    {
                        //读计数值
                        string strValue = buffer[5].ToString（“X2“） + “ “ + buffer[6].ToString（“X2“） + “ “ + buffer[7].ToString（“X2“） + “ “ + buffer[8].ToString（“X2“） + “ “ + buffer[9].ToString（“X2“） + “ “ + buffer[10].ToString（“X2“）;
                        Int64 intValue = Int64.Parse（buffer[5].ToString（） + buffer[6].ToString（） + buffer[7].ToString（） + buffer[8].ToString（） + buffer[9].ToString（） + buffer[10].ToString（））;
                        this.Invoke（（EventHandler）（delegate
                        {
                            this.label1.Text = intValue.ToString（）;
                        }））;
                    }
                    else
                    {
                        buffer = null;
                    }
                }
            }
            finally
            {
                IsListening = false;
            }
        }

        private void frmTest_Load（object sender EventArgs e）
        {
            Com_SerialPort = new SerialPort（）;
            MCJS50.SetSerialPort（Com_SerialPort IsClosing IsListening）;
            Com_SerialPort.DataReceived += Com_SerialPort_DataReceived;
        }

        private void button2_Click（object sender EventArgs e）
        {
            MCJS50.ReadValue（Com_SerialPort）;
        }
    }

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

    ..A..H.     58880  2016-09-21 16:18  RS232串口通讯CSharp\.vs\RS232串口通讯CSharp\v14\.suo

     文件        157  2016-09-07 16:06  RS232串口通讯CSharp\RS232串口通讯CSharp\App.config

     文件      35840  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\RS232串口通讯CSharp.dll

     文件        157  2016-09-07 16:06  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\RS232串口通讯CSharp.dll.config

     文件      54784  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\RS232串口通讯CSharp.pdb

     文件      21680  2016-09-19 08:30  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\RS232串口通讯CSharp.vshost.exe

     文件        157  2016-09-07 16:06  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\RS232串口通讯CSharp.vshost.exe.config

     文件        490  2015-06-04 12:48  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\RS232串口通讯CSharp.vshost.exe.manifest

     文件     180904  2013-07-09 11:04  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\System.Net.Http.dll

     文件     148528  2015-11-02 01:02  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\System.Net.Http.xml

     文件      17576  2013-07-09 11:34  RS232串口通讯CSharp\RS232串口通讯CSharp\bin\Debug\zh-Hans\System.Net.Http.resources.dll

     文件       3088  2016-09-07 17:28  RS232串口通讯CSharp\RS232串口通讯CSharp\frmTest.cs

     文件       3299  2016-09-07 17:27  RS232串口通讯CSharp\RS232串口通讯CSharp\frmTest.Designer.cs

     文件       5817  2016-09-07 17:27  RS232串口通讯CSharp\RS232串口通讯CSharp\frmTest.resx

     文件       1788  2016-09-07 16:39  RS232串口通讯CSharp\RS232串口通讯CSharp\frmUserVerification.cs

     文件       4930  2016-09-07 16:27  RS232串口通讯CSharp\RS232串口通讯CSharp\frmUserVerification.Designer.cs

     文件       5817  2016-09-07 16:27  RS232串口通讯CSharp\RS232串口通讯CSharp\frmUserVerification.resx

     文件       3203  2016-09-20 10:54  RS232串口通讯CSharp\RS232串口通讯CSharp\MCJS50.cs

     文件      18783  2016-09-08 10:40  RS232串口通讯CSharp\RS232串口通讯CSharp\MCJS50_Rs232.cs

     文件      46603  2016-09-07 18:23  RS232串口通讯CSharp\RS232串口通讯CSharp\MCJS50_Rs232.Designer.cs

     文件       6414  2016-09-07 18:23  RS232串口通讯CSharp\RS232串口通讯CSharp\MCJS50_Rs232.resx

     文件       2410  2016-09-13 17:07  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6243  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件       2423  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\RS232串口通讯CSharp.csproj.FileListAbsolute.txt

     文件        986  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\RS232串口通讯CSharp.csproj.GenerateResource.Cache

     文件      35840  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\RS232串口通讯CSharp.dll

     文件        180  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\RS232串口通讯CSharp.frmTest.resources

     文件        180  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\RS232串口通讯CSharp.frmUserValidating.resources

     文件        180  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\RS232串口通讯CSharp.MCJS50_Rs232.resources

     文件      54784  2016-09-20 10:55  RS232串口通讯CSharp\RS232串口通讯CSharp\obj\Debug\RS232串口通讯CSharp.pdb

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