电脑如何获取你发来的数据？

        private void btnOpen_Click(object sender, EventArgs e)
{
            if (cbbComList.Items.Count <= 0)
            {
                MessageBox.Show("没有发现串口,请检查线路！");
                return;
            }
            if (ComDevice.IsOpen == false)
            {
                ComDevice.PortName = cbbComList.SelectedItem.ToString();//选择串口
                ComDevice.BaudRate = Convert.ToInt32(cbbBaudRate.Text.ToString());//选择波特率
                ComDevice.Parity = (Parity)Convert.ToInt32(Parity.None);//选择校验位
                ComDevice.DataBits = Convert.ToInt32(8);//选择数据位
                ComDevice.StopBits = (StopBits)Convert.ToInt32(1);//选择停止位
                time = Convert.ToInt32(150);//选择串口数据缓冲等待时间
                try
                {
                    ComDevice.DataReceived += new SerialDataReceivedEventHandler(Com_DataReceived);
                    ComDevice.Open();
                   
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
                btnOpen.Text = "关闭串口";
                pictureBox1.BackgroundImage = Properties.Resources.green;
            }
            else
            {
                try
                {
                    ComDevice.DataReceived -= new SerialDataReceivedEventHandler(Com_DataReceived);//取消绑定COM接收
                    Thread.Sleep(1000);
                    ComDevice.Close();
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                btnOpen.Text = "打开串口";
                pictureBox1.BackgroundImage = Properties.Resources.red;
            }
            cbbComList.Enabled = !ComDevice.IsOpen;
            cbbBaudRate.Enabled = !ComDevice.IsOpen;

        }
        /// <summary>
        /// 关闭串口
        /// </summary>
        public void ClearSelf()
{
            if (ComDevice.IsOpen)
            {
                ComDevice.Close();
            }
        }
        private void cbbComList_SelectedIndexChanged(object sender, EventArgs e)
{

        }
        
        /// <summary>
        /// 字符串转换16进制字节数组
        /// </summary>
        /// <param name="hexString"></param>
        /// <returns></returns>
        private byte[] strToHexByte(string hexString)
        {
            hexString = hexString.Replace(" ", "");
            if ((hexString.Length % 2) != 0) hexString += " ";
            byte[] returnBytes = new byte[hexString.Length / 2];
            for (int i = 0; i < returnBytes.Length; i++)
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2).Replace(" ", ""), 16);
            return returnBytes;
        }

        /// <summary>
        /// 接收数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Com_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
            //等待缓冲区数据
            Thread.Sleep(time);
            byte[] ReDatas = new byte[ComDevice.BytesToRead];
            ComDevice.Read(ReDatas, 0, ReDatas.Length);//读取数据 
            //丢弃接收缓冲区数据
            ComDevice.DiscardInBuffer();

            this.AddData(ReDatas);//输出数据
        }
        /// <summary>
        /// 添加数据
        /// </summary>
        /// <param name="data">字节数组</param>
        public void AddData(byte[] data)
{
           
                AddContent(new ASCIIEncoding().GetString(data));//选择ASCII形式
                
        }
        private void AddContent(string content)
{
            this.BeginInvoke(new MethodInvoker(delegate
            {
                cardNum.Clear();//清空
                cardNum.AppendText(content);
            }
            ));
        }

        private void button1_Click(object sender, EventArgs e)
{
            if(cardNum.Text== "E0022302AED19C52")
            {
                MessageBox.Show("管理员");
            }
            else if(cardNum.Text== "E0022302AED23534")
            {
                MessageBox.Show("消费者");
            }
        }