Com口接受地磅数据死机

Question

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace ReadData
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            //MSComm1.PortOpen = false;
        }
               public string WeightStr;
        public byte[] bytReceiveByte;      //接收到的字节
        public int intReceiveLen;    //接收到的字节数
        public int intHexWidth;      //显示列数（电子秤的输出位数小循环）
        public string strAscii;
     
        //电子秤输出的ASCII码        private void btn_start_Click(object sender, EventArgs e)
        {
            readweighta9(); 
 
        }        private void readweighta9()
        {
            //串口参数初始化
            try
            {
                MSComm1.InputLen = 0;
                MSComm1.CommPort = 1;//1;
                MSComm1.Settings = "4800,n,8,1"; //";
                MSComm1.InputMode = MSCommLib.InputModeConstants.comInputModeBinary;                MSComm1.RThreshold = 480;
                MSComm1.SThreshold = 1;
                
                MSComm1.InBufferCount = 0;                MSComm1.InBufferSize = 1024;
                MSComm1.OutBufferSize = 512;
                intHexWidth = 9;                          //电子秤输出为9位的循环
                if (MSComm1.PortOpen == false)
                {
                    MSComm1.PortOpen = true;
                }
            }catch(Exception e){
                throw e;
                MessageBox.Show("ddddddddd");
            }
        }
        public string GetWeightA9(string RedData)
        {
            int FFirst, FSecond;
            string OriStr1, OriStr2;            if (RedData == "")
            {
                return ("0.000");
            }
            FFirst = RedData.IndexOf("+", 1);
            FSecond = RedData.IndexOf("+", FFirst + 1);
            //  Fthird = RedData.IndexOf("+", FSecond + 1);            if (FFirst < FSecond)
            {                OriStr1 = RedData.Substring(FFirst + 1, 6);
                OriStr2 = RedData.Substring(FSecond + 1, 6);
                if (OriStr1.Equals(OriStr2))
                {
                    if (OriStr1.Equals("000000") && OriStr2.Equals("000000"))
                    {
                        return ("0.000");
                    }
                    else
                    {
                        return ((Convert.ToString(Convert.ToDouble(OriStr1) / 1000)));
                    }
                }                else
                {
                    return ("0.000");
                }
            }
            else
            {
                return ("0.000");
            }
        }
        private void btn_end_Click(object sender, EventArgs e)
        {
            if (MSComm1.PortOpen == true) {
                MSComm1.PortOpen = false;
                lbl_state.Text = "停止";
            }
        }        private void MSComm1_OnComm(object sender, EventArgs e)
        {
            byte[] bytInput;
            object objInput;
            int intInputLen;            if (MSComm1.PortOpen == false)
            {
                MSComm1.PortOpen = true;
            }
            if (MSComm1.CommEvent == 2)
            {
                lbl_state.Text = "...正 常...";
            }
            else
            {
                lbl_state.Text = "...测试中...";
            }            //此处添加处理接收的代码-
            //以二进制方式读取串口值！
            MSComm1.InputMode = MSCommLib.InputModeConstants.comInputModeBinary;
            intInputLen = MSComm1.InBufferCount;
            bytInput = new byte[intInputLen];
            objInput = MSComm1.Input;//这里注意axMSComm1.Input返回的是一个object的 
            bytInput = (byte[])objInput;//类型，所以必须使用显式的类型转换，这点和VB不同 
            InputManage(bytInput, intInputLen);
            GetDisplayText();
        }        //'**********************************
        //'输入处理
        //'处理接收到的字节流,并保存在全局变量
        //'bytReceiveRyte()
        //'**********************************
        public void InputManage(byte[] bytInput, int intInputLenth)
        {
            int n;                          //定义变量及初始化            // ReDim Preserve bytReceiveByte(intReceiveLen + intInputLenth)
            bytReceiveByte = new byte[intReceiveLen + intInputLenth];
            for (n = 0; n <= intInputLenth - 1; n++)
            {
                bytReceiveByte[intReceiveLen + n] = bytInput[n];
            }
            intReceiveLen = intReceiveLen + intInputLenth;
        }        //'***********************************
        //'为输出准备文本
        //'保存在全局变量
        //'strText
        //'总行数保存在
        //'intLine
        //'***********************************
        public void GetDisplayText()
        {
            int n, intValue, intHighHex, intLowHex;
            string strSingleChr;
            strAscii = "";        //设置初值            //'*****************************************
            //'获得16进制码和ASCII码的字符串
            //'*****************************************
            for (n = 0; n <= intReceiveLen - 1; n++)
            {
                intValue = Convert.ToInt32(bytReceiveByte[n]);                if (intValue < 32 || intValue > 128)
                {//处理非法字符
                    strSingleChr = Convert.ToString((char)46);
                }//对于不能显示的ASCII码,
                else
                {//用"."表示
                    strSingleChr = Convert.ToString((char)intValue);
                }
                strAscii = strAscii + strSingleChr;                intHighHex = intValue / 16;
                intLowHex = intValue - intHighHex * 16;                if (intHighHex < 10)
                {
                    intHighHex = intHighHex + 48;
                }
                else
                {
                    intHighHex = intHighHex + 55;
                }
                if (intLowHex < 10)
                {
                    intLowHex = intLowHex + 48;
                }
                else
                {
                    intLowHex = intLowHex + 55;
                }                if ((n % intHexWidth) == 0)
                {
                    if ((strAscii.Length) >= 60)
                    {
                        WeightStr = strAscii.Substring(strAscii.Length - 30, 30);
                        lbl_data.Text = GetWeightA9(WeightStr);                    }
                }
            }
            if (intReceiveLen > 524)
            {
                ClearWeight();
            }
        }
        public void ClearWeight()
        {
            byte[] bytTemp;
            bytTemp = new byte[0];
            bytReceiveByte = new byte[0];
            intReceiveLen = 0;
            InputManage(bytTemp, 0);        }从仪表上读取数据正确就是过一会会死机

Answer 1

可虑是不是因为数据量太大，缓存不够，处理不过来