Sony PaSoRiでIDｍ読み込み C#で

PaSoRi RC-S330 / FelicaLib / C# 2008 Express Editionで。
白Felica、携帯なんかのIDｍは問題ない。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Net.Sockets;
using FelicaLib;

namespace FelicaApp
{
  public partial class FelicaApp : Form
  {
    byte[] IDm = new Byte[8];
    byte[] PMm = new Byte[8];

    public FelicaApp()
    {
      // set timer for pasori polling
      Timer timer = new Timer();
      timer.Tick += new EventHandler(PollPaSoRi);
      timer.Interval = 3000;
      timer.Enabled = true;

      InitializeComponent();
    }

    public void PollPaSoRi(object sender, EventArgs e)
    {
      try
      {
        using (Felica f = new Felica())
        {
          // try polling
          f.Polling((int)SystemCode.Common);

          // beep if read ok
          this.lblMsg.Text = Properties.Resources.msgFelicaOK;
          Console.Beep(500, 100);

          IDm = f.IDm();
          PMm = f.PMm();

          // convert ID to string
          string IDmString = "";
          for (int i = 0; i < IDm.Length; i++)
          {
            IDmString = IDmString + IDm[i].ToString("X2");
          }

          this.lblIdm.Text = IDmString;

          string PMmString = "";
          for (int i = 0; i < PMm.Length; i++)
          {
            PMmString = PMmString + PMm[i].ToString("X2");
          }
          this.lblPmm.Text = PMmString;

          // send server msg
          string ret = this.sendID(IDmString, PMmString);
          Int32 intRet = Int32.Parse(ret);
          if (0 != intRet)
          {
            this.lblPt.Text = ret;
            this.lblPt.Visible = true;
            this.lblPtMsg1.Visible = true;
            this.lblPtMsg2.Visible = true;
          }
          else
          {
            this.lblPt.Text = "";
            this.lblPt.Visible = false;
            this.lblPtMsg1.Visible = false;
            this.lblPtMsg2.Visible = false;
          }

          // beep if read ok
          Console.Beep(800, 100);

          for (int i = 0; i < 700; i++)
          {
            System.Threading.Thread.Sleep(10);
            Application.DoEvents();
          }

          // refresh for print screen
          //this.lblMsg.Refresh();
          //this.lblIdm.Refresh(); // TODO for DEBUG
          //this.lblPmm.Refresh(); // TODO for DEBUG
        }
      }
      catch (Exception ex)
      {
        if ((ex.Message == Properties.Resources.msgFelicaNG) |
          (ex.Message == Properties.Resources.msgFelicaSySError))
        {
          this.lblMsg.Text = Properties.Resources.msgFelicaDefault;
          this.lblPt.Text = "";
          this.lblPt.Visible = false;
          this.lblPtMsg1.Visible = false;
          this.lblPtMsg2.Visible = false;
        }
        else
        {
          this.lblMsg.Text = ex.Message;
        }

        this.lblIdm.Text = "";
        this.lblPmm.Text = "";
      }
    }

    private string sendID(string IDm, string PMm)
    {
      // create msg
      string server = Properties.Resources.confServer;
      string message = "idm=" + IDm + "&" + "pmm=" + PMm;

      // send to the server (http post)
      return postRequest(server, message);
    }

    private string postRequest(string url, string postData)
    {
      // return string
      string ret = "";

      try
      {
        System.Text.Encoding enc = System.Text.Encoding.GetEncoding("utf-8");

        byte[] postDataBytes = System.Text.Encoding.ASCII.GetBytes(postData);

        // create request
        System.Net.WebRequest req = System.Net.WebRequest.Create(url);

        // set method 'post'
        req.Method = "POST";

        // set contenttype
        req.ContentType = "application/x-www-form-urlencoded";

        // set length of post data
        req.ContentLength = postDataBytes.Length;

        // create stream for post
        System.IO.Stream reqStream = req.GetRequestStream();

        // post
        reqStream.Write(postDataBytes, 0, postDataBytes.Length);
        reqStream.Close();

        // prepare retrieve response
        System.Net.WebResponse res = req.GetResponse();

        // create stream for response
        System.IO.Stream resStream = res.GetResponseStream();

        // retrieve response
        System.IO.StreamReader sr = new System.IO.StreamReader(resStream, enc);
        ret = sr.ReadToEnd();

        // close
        sr.Close();
      }
      catch (Exception e)
      {
        MessageBox.Show(e.Message);
      }

      return ret;
    }
  }
}