net2.0下实现串口接收GPS数据读写（－）

最近写了个简单的串口接收GPS数据的程序,下面主程序中的代码，主要利用BackGroundWork组件来实现数据的接收。

using  System;
using  System.Collections.Generic;
using  System.ComponentModel;
using  System.Data;
using  System.Drawing;
using  System.Text;
using  System.Windows.Forms;
using  System.IO;
using  Microsoft.Practices.EnterpriseLibrary.Data;
using  Microsoft.Practices.EnterpriseLibrary.Data.Sql;
using  System.Data.Common;
using  System.Collections;

namespace  GPSSerialPortData
... ... {
    public partial class MainFrom : Form
    ......{
        private System.IO.Ports.SerialPort[] ports = null;
        private bool IsShowData = false;
        StringBuilder f_SB = new StringBuilder();    

        public MainFrom()
        ......{            
            InitializeComponent(); 
        }

        private string newline()
        ......{
           return " ";
        }

        /**//**//**//// <summary>
        /// 打开串口并开始数据接收
        /// </summary>
        private void OpenPort()
        ......{
            for (int i = 0; i < SerialPortConfig.Ports.Count; i++)
            ......{
                try
                ......{
                    ports[i].Open();
                    ports[i].DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(SPort_DataReceived);
                    tbPortState.Text += "串口" + ports[i].PortName + "已经打开" + newline();
                }
                catch
                ......{
                    tbPortState.Text += "串口" + ports[i].PortName + "不存在或已占用" + newline();
                }
            }
        }

        /**//**//**//// <summary>
        /// 停止数据接收并关闭串口
        /// </summary>
        private void ClosePort()
        ......{
            for (int i = 0; i < SerialPortConfig.Ports.Count; i++)
            ......{
                try
                ......{
                    if (ports[i].IsOpen)
                    ......{
                        ports[i].DataReceived -= new System.IO.Ports.SerialDataReceivedEventHandler(SPort_DataReceived);
                        ports[i].Close();                        
                    }
                    tbPortState.Text += "串口" + ports[i].PortName + "已经关闭" + newline();
                }
                catch
                ......{
                    tbPortState.Text += "串口" + ports[i].PortName + "不存在或已占用" + newline();
                }
            }
        }
       
          
        private void AddReceiveData(byte[] bytes)
        ......{
            lock (f_SB)
            ......{
                foreach (byte b in bytes)
                ......{
                    if (b < 16)
                    ......{
                        f_SB.Append( "0"+Convert.ToString(b, 16).ToUpper());
                    }
                    else
                    ......{
                        f_SB.Append(Convert.ToString(b, 16).ToUpper());
                    }
                }
            }
        }
        BackgroundWorker f_BG = new BackgroundWorker();
        private void bgWorkerAnalyze_DoWork(object sender, DoWorkEventArgs e)
        ......{
            while (true)