本人所使用的開發環境是VS2008，開發的系統所在移動終端版本為windows mobile 5.0。由於需要進行身份的驗證，需要獲取移動終端的MAC地址，於是在網上進行搜索，主要看到了三種方法來實現獲取MAC地址，現記錄如下。
第一種方法：使用ManagementClass 來獲取。
殊不知，WinCE下並沒有System.Management，這種方法根本行不通。
第二種方法：通過查找注冊表來獲取MAC地址。
這是獲取注冊表地址的代碼：
代碼如下：
txtMAC1.Text = reg.ReadValue(YFReg.HKEY.HKEY_LOCAL_MACHINE, @"Comm\DM9CE1\Parms", "SoftwareMacAddress0");
其他的代碼我這裡就不列出來了，用這種方法我並沒有獲取到MAC地址。於是在網上下載了一個注冊表查看工具，在移動終端中找，找遍了，發現並沒有Comm\DM9CE1\Parms路徑，再找其他的路徑，都沒找到有SoftwareMacAddress節點的。好吧，可能這種方法能獲取MAC地址，但是我這個版本的不行。
第三種方法：通過SendARP獲取MAC地址。
代碼如下：
代碼如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.IO;
using System.Security.Cryptography;
using System.Net;
namespace WirelessRouteSystem
{
class SysInfo
{
private static string[] strEncrypt = new string[] { "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "AA", "AB", "AC", "AD", "AE", "AF", "AG", "AH", "AI", "AJ", "AK", "AL", "AM", "AN", "AO", "AP" };
private static Int32 METHOD_BUFFERED = 0;
private static Int32 FILE_ANY_ACCESS = 0;
private static Int32 FILE_DEVICE_HAL = 0x00000101;
private const Int32 ERROR_NOT_SUPPORTED = 0x32;
private const Int32 ERROR_INSUFFICIENT_BUFFER = 0x7A;
private static Int32 IOCTL_HAL_GET_DEVICEID = ((FILE_DEVICE_HAL) << 16) | ((FILE_ANY_ACCESS) << 14) | ((21) << 2) | (METHOD_BUFFERED);
[DllImport("coredll.dll", SetLastError = true)]
private static extern bool KernelIoControl(Int32 dwIoControlCode, IntPtr lpInBuf, Int32 nInBufSize, byte[] lpOutBuf, Int32 nOutBufSize, ref Int32 lpBytesReturned);
[DllImport("Iphlpapi.dll", EntryPoint = "SendARP")]
public static extern uint SendARP(uint DestIP, uint SrcIP, byte[] pMacAddr, ref uint PhyAddrLen);
/// <summary>
/// 獲取MAC地址
/// </summary>
/// <returns></returns>
public string GetMac()
{
uint ip = 0;
string mac = string.Empty;
//取本機IP列表
IPAddress[] ips = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
//取本機IP
byte[] ipp = ips[1].GetAddressBytes();
ip = (uint)((ipp[0]) | (ipp[1] << 8) | (ipp[2] << 16) | (ipp[3] << 24));
//取MAC
byte[] MacAddr = new byte[6];
uint PhyAddrLen = 6;
uint hr = SendARP(ip, 0, MacAddr, ref PhyAddrLen);
if (MacAddr[0] != 0 || MacAddr[1] != 0 || MacAddr[2] != 0 || MacAddr[3] != 0 || MacAddr[4] != 0 || MacAddr[5] != 0)
{
mac = MacAddr[0].ToString("X2") + ":" + MacAddr[1].ToString("X2") + ":" + MacAddr[2].ToString("X2") + ":" + MacAddr[3].ToString("X2") + ":" + MacAddr[4].ToString("X2") + ":" + MacAddr[5].ToString("X2");
}
return mac;
}
/// <summary>
///獲取本機IP
/// </summary>
/// <returns></returns>
public string GetIpAddress()
{
string strHostName = Dns.GetHostName(); //得到本機的主機名
IPHostEntry ipEntry = Dns.GetHostByName(strHostName); //取得本機IP
string strAddr = ipEntry.AddressList[1].ToString();
return strAddr;
}
}
}
通過 IP Helper API 中的 SendARP 發送 ARP 請求可以用來獲取指定IP地址的MAC 地址，簡單方便，缺點是不能跨越網關。
至於獲取IP地址，本文已經給出了兩種方法，都是通過NET下DNS類中方法獲取。
