随便写个用SerialPort操作串口的简单例子

来源：互联网发布：网络教育大学生认证编辑：程序博客网时间：2024/05/18 00:09

/*随便写个用SerialPort操作串口的简单例子（待修正及优化）*/

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

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        SerialPort sp = new SerialPort("COM3");

delegate void AppendStringDelegate(string str);

        public Form1()
        {
            InitializeComponent();
        }

        private void readData()
        {
            AppendStringDelegate appendStrMethod = new AppendStringDelegate(AppendString);

            while (true)
            {
                if (sp.IsOpen)
                {
                    int count = sp.BytesToRead;
                    byte[] bytes = new byte[count];
                    try
                    {
                        int DataLength = sp.Read(bytes, 0, bytes.Length);
                        if (DataLength > 0)
                        {
                            if (listBox1.InvokeRequired)
                            {
                                listBox1.Invoke(appendStrMethod, Encoding.UTF8.GetString(bytes));
                            }
                        }
                        Thread.Sleep(1000);
                    }
                    catch (Exception ex)
                    {
                        throw new Exception(ex.Message);
                    }
                }
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Thread thread = new Thread(new ThreadStart(readData));
            thread.IsBackground = true;
            thread.Start();
        }

        private void btnSend_Click(object sender, EventArgs e)
        {
            if (!sp.IsOpen)
            {
                sp.Open();
            }
            sp.RtsEnable = true;
            sp.Encoding = Encoding.GetEncoding("UTF-8");
            sp.Write(this.textBox1.Text);
        }

        private void AppendString(string str)
        {
            listBox1.Items.Add(str);
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            sp.Close();
            Application.ExitThread();
            Application.Exit();
        }
    }
}