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   源码介绍

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

namespace WindowsFormsApp1
{
    
    public partial class Form1 : Form
    {
        SerialPort sp;
        int n1 = 0;
        int b1 = 0;
        int b2 = 0;
        int b3 = 0;
        int b4 = 0;
        int b5 = 0;
        int b6 = 0;
        int b7 = 0;
        int b8 = 0;


        public Form1()
        {
            InitializeComponent();
        }

        #region 串口监听
        /// <summary>
        /// 串口监听
        /// </summary>
        public void Connect()
        {
            while (true)
            {
                string[] names = SerialPort.GetPortNames();
                n1 = names.Length;
                if (n1 != 0)
                {
                    sp = new SerialPort(names[2], 9600, Parity.None, 8, StopBits.One);
                    sp.Open();
                    break;
                }
            }
        }
        #endregion

        private static int comWatch(int ms)
        {
            while (true)
            {
                string[] names = SerialPort.GetPortNames();
                int n = names.Length;
                return n;
            }
        }

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

        private void button1_Click(object sender, EventArgs e)
        {
            if (b1==0)
            {
               
                sp.Write("A11T");
                button1.Text = "正扫到位";
                b1 = 1;

            }
            else
            {
                
                sp.Write("A10T");
                button1.Text = "正扫未到位";
                b1 = 0;
            }
           

        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (b2 == 0)
            {
                sp.Write("A21T");
                button2.Text = "反扫到位";
                b2 = 1;

            }
            else
            {
                sp.Write("A20T");
                button2.Text = "反扫未到位";
                b2 = 0;
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (b3 == 0)
            {
                sp.Write("A31T");
                button3.Text = "上帘到位";
                b3 = 1;

            }
            else
            {
                sp.Write("A30T");
                button3.Text = "门帘落下";
                b3 = 0;
            }
        }

        private void button4_Click(object sender, EventArgs e)
        {
            if (b4 == 0)
            {
                sp.Write("A41T");
                button4.Text = "下帘到位";
                b4 = 1;

            }
            else
            {
                sp.Write("A40T");
                button4.Text = "未落帘";
                b4 = 0;
            }
        }

        private void button5_Click(object sender, EventArgs e)
        {
            if (b5 == 0)
            {
                sp.Write("A51T");
                button5.Text = "入厂检测有检测物";
                b5 = 1;

            }
            else
            {
                sp.Write("A50T");
                button5.Text = " ";
                b5 = 0;
            }
        }

        private void button6_Click(object sender, EventArgs e)
        {
            if (b6 == 0)
            {
                sp.Write("A61T");
                button6.Text = "出厂检测有检测物";
                b6 = 1;

            }
            else
            {
                sp.Write("A60T");
                button6.Text = " ";
                b6 = 0;
            }

        }

        private void button7_Click(object sender, EventArgs e)
        {
            if (b7 == 0)
            {
                sp.Write("A71T");
                button7.Text = "——检测物到位——";
                b7 = 1;

            }
            else
            {
                sp.Write("A70T");
                button7.Text = "仓内无物品 ";
                b7 = 0;
            }
        }
    }
}