几种C#程序读取MAC地址的方法

/// <summary>
/// 根据截取ipconfig /all命令的输出流获取网卡Mac
/// </summary>
/// <returns></returns>
public static List < string > GetMacByIPConfig()
{
  List < string > macs = new List < string > ();

  ProcessStartInfo startInfo = new ProcessStartInfo("ipconfig", "/all");
  startInfo.UseShellExecute = false;
  startInfo.RedirectStandardInput = true;
  startInfo.RedirectStandardOutput = true;
  startInfo.RedirectStandardError = true;
  startInfo.CreateNoWindow = true;
  Process p = Process.Start(startInfo);
  // 截取输出流
  StreamReader reader = p.StandardOutput;
  string line = reader.ReadLine();

  while ( ! reader.EndOfStream)
  {
    if ( ! string .IsNullOrEmpty(line))
    {
      line = line.Trim();

      if (line.StartsWith( " Physical Address " ))
      {
        macs.Add(line);
      }
    }

    line = reader.ReadLine();
  }

  // 等待程序执行完退出进程
  p.WaitForExit();
  p.Close();
  reader.Close();
 
  return macs;
}

/// <summary>
/// 通过WMI读取系统信息里的网卡MAC
/// </summary>
/// <returns></returns>
public static List < string > GetMacByWMI()
{
  List < string > macs = new List < string > ();
  try
  {
    string mac = "" ;
    ManagementClass mc = new ManagementClass( " Win32_NetworkAdapterConfiguration " );
    ManagementObjectCollection moc = mc.GetInstances();
    foreach (ManagementObject mo in moc)
    {
      if (( bool )mo[ " IPEnabled " ])
      {
        mac = mo[ " MacAddress " ].ToString();
        macs.Add(mac );
      }
    }
    moc = null ;
    mc = null ;
  }
  catch
  {
  }

  return macs;
}

// 返回描述本地计算机上的网络接口的对象(网络接口也称为网络适配器)。
public static NetworkInterface[] NetCardInfo()
{
  return NetworkInterface.GetAllNetworkInterfaces();
}

/// <summary>
/// 通过NetworkInterface读取网卡Mac
/// </summary>
/// <returns></returns>
public static List < string > GetMacByNetworkInterface()
{
  List < string > macs = new List < string > ();
  NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
  foreach (NetworkInterface ni in interfaces)
  {
    macs.Add(ni.GetPhysicalAddress().ToString());
  }
  return macs;
}

/// <summary>
/// 通过SendARP获取网卡Mac
/// 网络被禁用或未接入网络（如没插网线）时此方法失灵
/// </summary>
/// <param name="remoteIP"></param>
/// <returns></returns>
public static string GetMacBySendARP( string remoteIP)
{
  StringBuilder macAddress = new StringBuilder();

  try
  {
    Int32 remote = inet_addr(remoteIP);

    Int64 macInfo = new Int64();
    Int32 length = 6 ;
    SendARP(remote, 0 , ref macInfo, ref length);

    string temp = Convert.ToString(macInfo, 16 ).PadLeft( 12 , ' 0 ' ).ToUpper();

    int x = 12 ;
    for ( int i = 0 ; i < 6 ; i ++ )
    {
      if (i == 5 )
      {
        macAddress.Append(temp.Substring(x - 2 , 2 ));
      }
      else
      {
        macAddress.Append(temp.Substring(x - 2 , 2 ) + " - " );
      }
      x -= 2 ;
    }

    return macAddress.ToString();
  }
  catch
  {
    return macAddress.ToString();
  }
}

[DllImport( " Iphlpapi.dll " )]
private static extern int SendARP(Int32 dest, Int32 host, ref Int64 mac, ref Int32 length);
[DllImport( " Ws2_32.dll " )]
private static extern Int32 inet_addr( string ip);