C#串口通信源代码

来源：互联网发布：淘宝上人参能买吗编辑：程序博客网时间：2024/05/08 10:07
界面
这里写图片描述
源码：下载
参考了以下两篇文章：
http://blog.csdn.net/geekwangminli/article/details/7851673
http://blog.csdn.net/wuyazhe/article/details/5598945
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;using System.Text.RegularExpressions;namespace 串口助手{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        SerialPort sp = new SerialPort();        private void Form1_Load(object sender, EventArgs e)        {            //获取所有串口名称            string[] serialName = SerialPort.GetPortNames();            foreach (string s in serialName)            {                //把串口名称添加到Combox                cbSerialName.Items.Add(s);            }            //初始化设置，设置默认值            cbSerialName.SelectedIndex = 0;            cbBaudRate.SelectedIndex = 5;            cbParity.SelectedIndex = 0;            cbStop.SelectedIndex = 0;            rb16Send.Select();            rb16Rcv.Checked = true;            cbDataBits.SelectedIndex = 3;            Control.CheckForIllegalCrossThreadCalls = false;    //这个类中我们不检查跨线程的调用是否合法(因为.net 2.0以后加强了安全机制,，不允许在winform中直接跨线程访问控件的属            sp.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived);        }        void sp_DataReceived(object sender, SerialDataReceivedEventArgs e)        {            if (sp.IsOpen)            {                //输出当前时间                DateTime dt = DateTime.Now;                textBoxRcv.Text += dt.GetDateTimeFormats('f')[0].ToString() + "\r\n";                try                {                    Byte[] receivedData = new Byte[sp.BytesToRead];        //创建接收字节数组                    sp.Read(receivedData, 0, receivedData.Length);         //读取数据,读取到receivedData中的是字符的ASCII码                    sp.DiscardInBuffer();                                  //清空SerialPort控件的Buffer                    //以字符串显示                    if (rbStrRcv.Checked)                    {                        string strRcv = null;                        for (int i = 0; i < receivedData.Length; i++)                        {                            strRcv += ((char)Convert.ToInt32(receivedData[i]));//把字节转换成整型，再强转成char                        }                        textBoxRcv.Text += strRcv + "\r\n";             //显示信息                    }                    //以16进制显示                    if (rb16Rcv.Checked)                    {                        string strRcv = null;                        //int decNum = 0;//存储十进制                        for (int i = 0; i < receivedData.Length; i++)                        {                            strRcv += receivedData[i].ToString("X2");  //16进制显示                        }                        textBoxRcv.Text += strRcv + "\r\n";                    }                }                catch (System.Exception ex)                {                    MessageBox.Show(ex.Message, "出错提示");                    textBoxSend.Text = "";                }            }            else            {                MessageBox.Show("请打开某个串口", "错误提示");            }        }        private void btnOpenSreial_Click(object sender, EventArgs e)      //打开串口 按钮        {            if (!sp.IsOpen)            {                try                {                    //串口号                    string serialName = cbSerialName.SelectedItem.ToString();                    sp.PortName = serialName;                    sp.BaudRate = Convert.ToInt32(cbBaudRate.Text);   //波特率                    sp.DataBits = Convert.ToInt32(cbDataBits.Text);   //数据位                    switch (cbStop.Text)           //停止位                    {                        case "1":                            sp.StopBits = StopBits.One;                            break;                        case "1.5":                            sp.StopBits = StopBits.OnePointFive;                            break;                        case "2":                            sp.StopBits = StopBits.Two;                            break;                        default:                            break;                    }                    switch (cbParity.Text)             //校验位                    {                        case "无":                            sp.Parity = Parity.None;                            break;                        case "奇校验":                            sp.Parity = Parity.Odd;                            break;                        case "偶校验":                            sp.Parity = Parity.Even;                            break;                        default:                            break;                    }                    if (sp.IsOpen == true)   //如果是开着的，先关一下，再开，直接打开可能会出问题                    {                        sp.Close();                    }                    sp.Open();                    btnOpenSreial.Text = "关闭串口";                    //打开串口之后，把串口配置选项都禁用掉                    cbSerialName.Enabled = false;                    cbBaudRate.Enabled = false;                    cbDataBits.Enabled = false;                    cbParity.Enabled = false;                    cbStop.Enabled = false;                }                catch (System.Exception ex)                {                    MessageBox.Show("Error:" + ex.Message, "Error");                    return;                }            }            else            {                //关闭串口                sp.Close();                btnOpenSreial.Text = "打开串口";                //启用配置选项                cbSerialName.Enabled = true;                cbStop.Enabled = true;                cbParity.Enabled = true;                cbDataBits.Enabled = true;                cbBaudRate.Enabled = true;            }        }        private void btnExit_Click(object sender, EventArgs e)        {            Application.Exit();  //退出按钮        }        private void btnClearSend_Click(object sender, EventArgs e)        {            textBoxSend.Text = "";   //清空发送数据文本框        }        private void btnClearRcv_Click(object sender, EventArgs e)        {            textBoxRcv.Text = "";  //清空接收数据文本框        }        private void btnSend_Click(object sender, EventArgs e)    //发送按钮        {            if (!sp.IsOpen)            {                MessageBox.Show("请先打开串口！！！");                return;            }            string strSend = textBoxSend.Text;            if (rb16Send.Checked)         //以16进制格式进行发送            {                string strBuf = strSend;                string sendnoNull = strBuf.Trim();      //去掉空格                string[] sendArray = strBuf.Split(' ');  //以空格分割                byte[] b = new byte[sendArray.Length];                //逐个将字符转为16进制字节数据                for (int i = 0; i < sendArray.Length; i++)                {                    b[i] = Convert.ToByte(sendArray[i], 16);                }                sp.Write(b, 0, b.Length);            }            else              //以字符串格式发送            {                sp.WriteLine(textBoxSend.Text);            }        }        private void textBoxSend_KeyPress(object sender, KeyPressEventArgs e)        {            if (rb16Send.Checked == true)      //以16进制格式发送数据时，只能输入特定字符            {                //正则匹配                string patten = "[0-9a-fA-F]|\b|0x|0X| "; //“\b”：退格键                Regex r = new Regex(patten);                Match m = r.Match(e.KeyChar.ToString());                if (m.Success)//&&(txtSend.Text.LastIndexOf(" ") != txtSend.Text.Length-1))                {                    e.Handled = false;                }                else                {                    e.Handled = true;                }            }            else            {                e.Handled = false;            }        }        private void Form1_FormClosing(object sender, FormClosingEventArgs e)        {            sp.Close();        }    }}
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