private List<byte> buffer = new List<byte>(256);//默认分配1/16页内存，并始终限制不允许超过   
        private byte[] binary_data_1 = new byte[12];//
        private byte[] sendbuff = new byte[4];
        bool bl = false;
        int timeoutCount=0;
        bool timeoutFlag = false;
 private void SerialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)//Getting data from Comm Port
        {
            if (IClosing) return;
            try
            {
                timeoutFlag = false;
                Listening = true;//设置标记，说明我已经开始处理数据，一会儿要使用系统UI的。         
                int n = SerialPort1.BytesToRead;
                byte[] buf = new byte[n];
                SerialPort1.Read(buf, 0, n);//读取缓冲数据     
                bool data_1_catched = false;//缓存记录数据是否捕获到    
                buffer.AddRange(buf);
                while (buffer.Count >= 12)
                {
                    byte CRCH, CRCL;
                    byte[] crcTemp = new byte[10];
                    buffer.CopyTo(0, crcTemp, 0, 10);

                    CRCData.CalculateCrc16(crcTemp, out CRCH, out CRCL);
                    if (buffer[10] != CRCH && buffer[11] != CRCL)
                    {
                        buffer.RemoveAt(0);
                        continue;//继续下一次循环   
                    }
                    buffer.CopyTo(0, binary_data_1, 0, 12);//复制一条完整数据到具体的数据缓存   
                    data_1_catched = true;
                    buffer.RemoveRange(0, 12);//正确分析一条数据，从缓存中移除数据。     
                }
                if (data_1_catched)
                {
                    foreach (byte data in binary_data_1)
                        RecText = RecText + data.ToString();
                    bl = true;

                    byte[] dataTemp = new byte[2];// for Hex to singal.
                    int xx=0;
                    int rowNo=binary_data_1[1];

                    this.Invoke((EventHandler)(delegate
                    {
                        for (int i = 0; i < 4; i++)
                        { 
                            dataTemp[0]=binary_data_1[i*2+3];
                            dataTemp[1]=binary_data_1[i*2+2];
                            xx=dataTemp[0]*256+dataTemp[1];
                            this.dataViewMain[i+1, rowNo].Value = xx.ToString();
                        }
                            
                        
                    }));
                }
            }
            finally  
            {   
                Listening = false;
                timeoutFlag = true;
                timeoutCount = 0;
            }   
        }

   class CRC16
    {
        public CRC16()
        {
        }

        private readonly byte[] _auchCRCHi = new byte[]//crc高位表
        {
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 
            0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,    0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,    0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,    0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 
            0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,    0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 
            0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0x