c# 温度检测上位机

c# 温度检测上位机。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using ZedGraph;
using Microsoft.Win32;
//using System.Windows.Forms.Clipboard;
namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        //GraphPane myPane = zgc.GraphPane;
        byte[] buff = new byte[30];
        Boolean isopen=false;
        int counter = 0;
        PointPairList list = new PointPairList（）;

       // LineItem curve;
        public Form1（）
        {
            InitializeComponent（）;
        }

        private void button1_Click（object sender EventArgs e）
        {
            try
            {


                if （isopen == false）
                {
                    serialPort1.BaudRate = Convert.ToInt32（comboBox2.Text）;
                    serialPort1.PortName = comboBox1.Text;
                    serialPort1.Open（）;
                    serialPort1.Write（“s“）;
                    if （Convert.ToUInt16（serialPort1.ReadLine（）） != 1820）
                    {
                        MessageBox.Show（“没找到设备“）;
                        return;
                    }
                    button1.Text = “停止采集“;

                    isopen = true;
                    serialPort1.Write（“i“）;
                    label3.Text = “器件ID：“ + serialPort1.ReadLine（）;
                    serialPort1.Write（“j“）;
                    switch （Convert.ToInt16（serialPort1.ReadLine（）））
                    {
                        case 127:
                            label2.Text = “12位精度“;
                            break;
                        case 31:
                            label2.Text = “9位精度“;
                            break;
                        case 63:
                            label2.Text = “10位精度“;
                            break;
                        case 95:
                            label2.Text = “11位精度“;
                            break;
                        default:
                            label2.Text = “未知精度“;
                            break;


                    }
                    timer1.Interval = Convert.ToInt32（Convert.ToDouble（trackBar1.Value / 4） * 1000）;
                    timer1.Start（）;
                }
                else
                {
                    timer1.Stop（）;
                    serialPort1.Close（）;
                    serialPort1.Dispose（）;
                    button1.Text = “开始采集“;
                    isopen = false;
                }
            }
            catch （System.TimeoutException）
            {
                MessageBox.Show（“没找到设备“）;
                timer1.Stop（）;
                    serialPort1.Close（）;
                    serialPort1.Dispose（）;
                    button1.Text = “开始采集“;
                    isopen = false;

            }
            catch （Exception ex）
        

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