Question

无论使用C＃运行的操作系统如何，我都需要一种获取机器MAC地址的方法。应用程序需要在XP / Vista / Win7 32和64位以及这些操作系统上运行，但具有外语默认值。许多C＃命令和OS查询不能在OS上运行。有任何想法吗？我一直在抓取“ipconfig / all”的输出，但这非常不可靠，因为每台机器的输出格式都不同。

由于

Answer 1

清洁解决方案

var macAddr = 
    (
        from nic in NetworkInterface.GetAllNetworkInterfaces()
        where nic.OperationalStatus == OperationalStatus.Up
        select nic.GetPhysicalAddress().ToString()
    ).FirstOrDefault();

或者：

String firstMacAddress = NetworkInterface
    .GetAllNetworkInterfaces()
    .Where( nic => nic.OperationalStatus == OperationalStatus.Up && nic.NetworkInterfaceType != NetworkInterfaceType.Loopback )
    .Select( nic => nic.GetPhysicalAddress().ToString() )
    .FirstOrDefault();

Answer 2

这是一些C＃代码，它返回第一个可操作网络接口的MAC地址。假设NetworkInterface程序集在其他操作系统上使用的运行时（即Mono）中实现，那么这将适用于其他操作系统。

新版本：以最快的速度返回网卡，也具有有效的MAC地址。

/// <summary>
/// Finds the MAC address of the NIC with maximum speed.
/// </summary>
/// <returns>The MAC address.</returns>
private string GetMacAddress()
{
    const int MIN_MAC_ADDR_LENGTH = 12;
    string macAddress = string.Empty;
    long maxSpeed = -1;

    foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
    {
        log.Debug(
            "Found MAC Address: " + nic.GetPhysicalAddress() +
            " Type: " + nic.NetworkInterfaceType);

        string tempMac = nic.GetPhysicalAddress().ToString();
        if (nic.Speed > maxSpeed &&
            !string.IsNullOrEmpty(tempMac) &&
            tempMac.Length >= MIN_MAC_ADDR_LENGTH)
        {
            log.Debug("New Max Speed = " + nic.Speed + ", MAC: " + tempMac);
            maxSpeed = nic.Speed;
            macAddress = tempMac;
        }
    }

    return macAddress;
}

原始版本：只返回第一个。

/// <summary>
/// Finds the MAC address of the first operation NIC found.
/// </summary>
/// <returns>The MAC address.</returns>
private string GetMacAddress()
{
    string macAddresses = string.Empty;

    foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
    {
        if (nic.OperationalStatus == OperationalStatus.Up)
        {
            macAddresses += nic.GetPhysicalAddress().ToString();
            break;
        }
    }

    return macAddresses;
}

我唯一不喜欢这种方法的是，如果你喜欢Nortel Packet Miniport或某种类型的VPN连接，它有可能被选中。据我所知，没有办法区分实际物理设备的MAC与某种类型的虚拟网络接口。

Answer 3

如果您连接的计算机是Windows计算机，WMI是最佳解决方案，但如果您正在查看Linux，Mac或其他类型的网络适配器，那么您将需要使用其他内容。以下是一些选项：

使用DOS命令nbtstat -a。创建一个进程，调用此命令，解析输出。
首先Ping IP以确保您的NIC在其ARP表中缓存命令，然后使用DOS命令arp -a。像选项1一样解析过程的输出。
在iphlpapi.dll中使用可怕的非托管调用sendarp

下面是第3项的样本。如果WMI不是一个可行的解决方案，这似乎是最好的选择：

using System.Runtime.InteropServices;
...
[DllImport("iphlpapi.dll", ExactSpelling = true)]
        public static extern int SendARP(int DestIP, int SrcIP, byte[] pMacAddr, ref uint PhyAddrLen);
...
private string GetMacUsingARP(string IPAddr)
{
    IPAddress IP = IPAddress.Parse(IPAddr);
    byte[] macAddr = new byte[6];
    uint macAddrLen = (uint)macAddr.Length;

    if (SendARP((int)IP.Address, 0, macAddr, ref macAddrLen) != 0)
        throw new Exception("ARP command failed");

    string[] str = new string[(int)macAddrLen];
    for (int i = 0; i < macAddrLen; i++)
        str[i] = macAddr[i].ToString("x2");

    return string.Join(":", str);
}

为了给予应有的信用，这是该代码的基础： http://www.pinvoke.net/default.aspx/iphlpapi.sendarp#

Answer 4

Win32_NetworkAdapterConfiguration WMI class的 MACAddress 属性可以为您提供适配器的MAC地址。（System.Management命名空间）

MACAddress

    Data type: string
    Access type: Read-only

    Media Access Control (MAC) address of the network adapter. A MAC address is assigned by the manufacturer to uniquely identify the network adapter.

    Example: "00:80:C7:8F:6C:96"

如果您不熟悉WMI API（Windows Management Instrumentation），那么.NET应用程序就有good overview here。

WMI适用于.Net运行时的所有版本的Windows。

这是一个代码示例：

System.Management.ManagementClass mc = default(System.Management.ManagementClass);
ManagementObject mo = default(ManagementObject);
mc = new ManagementClass("Win32_NetworkAdapterConfiguration");

ManagementObjectCollection moc = mc.GetInstances();
    foreach (var mo in moc) {
        if (mo.Item("IPEnabled") == true) {
              Adapter.Items.Add("MAC " + mo.Item("MacAddress").ToString());
         }
     }

Answer 5

我们使用WMI获取具有最低指标的接口的mac地址，例如接口窗口将更喜欢使用，如下所示：

public static string GetMACAddress()
{
    ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapterConfiguration where IPEnabled=true");
    IEnumerable<ManagementObject> objects = searcher.Get().Cast<ManagementObject>();
    string mac = (from o in objects orderby o["IPConnectionMetric"] select o["MACAddress"].ToString()).FirstOrDefault();
    return mac;
}

或者在Silverlight中（需要提升信任度）：

public static string GetMACAddress()
{
    string mac = null;
    if ((Application.Current.IsRunningOutOfBrowser) && (Application.Current.HasElevatedPermissions) && (AutomationFactory.IsAvailable))
    {
        dynamic sWbemLocator = AutomationFactory.CreateObject("WbemScripting.SWBemLocator");
        dynamic sWbemServices = sWbemLocator.ConnectServer(".");
        sWbemServices.Security_.ImpersonationLevel = 3; //impersonate

        string query = "SELECT * FROM Win32_NetworkAdapterConfiguration where IPEnabled=true";
        dynamic results = sWbemServices.ExecQuery(query);

        int mtu = int.MaxValue;
        foreach (dynamic result in results)
        {
            if (result.IPConnectionMetric < mtu)
            {
                mtu = result.IPConnectionMetric;
                mac = result.MACAddress;
            }
        }
    }
    return mac;
}

Answer 6

public static PhysicalAddress GetMacAddress()
{
    var myInterfaceAddress = NetworkInterface.GetAllNetworkInterfaces()
        .Where(n => n.OperationalStatus == OperationalStatus.Up && n.NetworkInterfaceType != NetworkInterfaceType.Loopback)
        .OrderByDescending(n => n.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
        .Select(n => n.GetPhysicalAddress())
        .FirstOrDefault();

    return myInterfaceAddress;
}

Answer 7

我需要获取用于连接到互联网的实际NIC的MAC;确定在我的客户端应用程序中使用哪个WCF接口。

我在这里看到很多答案，但没有一个能帮助我。希望这个答案有所帮助。

此解决方案返回用于连接到互联网的NIC的MAC。

private static PhysicalAddress GetCurrentMAC(string allowedURL)
{
  TcpClient client = new TcpClient();
  client.Client.Connect(new IPEndPoint(Dns.GetHostAddresses(allowedURL)[0], 80));
  while(!client.Connected)
  {
    Thread.Sleep(500);  
  }
  IPAddress address2 = ((IPEndPoint)client.Client.LocalEndPoint).Address;
  client.Client.Disconnect(false);
  NetworkInterface[] allNetworkInterfaces = NetworkInterface.GetAllNetworkInterfaces();
  client.Close();
  if(allNetworkInterfaces.Length > 0)
  {
    foreach(NetworkInterface interface2 in allNetworkInterfaces)
    {
      UnicastIPAddressInformationCollection unicastAddresses = interface2.GetIPProperties().UnicastAddresses;
      if((unicastAddresses != null) && (unicastAddresses.Count > 0))
      {
        for(int i = 0; i < unicastAddresses.Count; i++)
          if(unicastAddresses[i].Address.Equals(address2))
            return interface2.GetPhysicalAddress();
      }
    }
  }
  return null;
}

要调用它，您需要传递一个URL来连接到这样：

PhysicalAddress mac = GetCurrentMAC("www.google.com");

Answer 8

您可以使用NIC ID：

 foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces()) {
     if (nic.OperationalStatus == OperationalStatus.Up){
         if (nic.Id == "yay!")
     }
 }

这不是MAC地址，但它是一个唯一的标识符，如果这是你正在寻找的。

Answer 9

恕我直言，返回第一个mac地址不是一个好主意，尤其是在托管虚拟机时。因此，我检查了发送/接收的字节总和并选择了最常用的连接，虽然这并不完美，但应该正确9/10次。

public string GetDefaultMacAddress()
{
    Dictionary<string, long> macAddresses = new Dictionary<string, long>();
    foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
    {
        if (nic.OperationalStatus == OperationalStatus.Up)
            macAddresses[nic.GetPhysicalAddress().ToString()] = nic.GetIPStatistics().BytesSent + nic.GetIPStatistics().BytesReceived;
    }
    long maxValue = 0;
    string mac = "";
    foreach(KeyValuePair<string, long> pair in macAddresses)
    {
        if (pair.Value > maxValue)
        {
            mac = pair.Key;
            maxValue = pair.Value;
        }
    }
    return mac;
}

Answer 10

假设我使用我的本地IP 192.168.0.182进行TcpConnection。然后，如果我想知道该NIC的mac地址，我将调用meothod：GetMacAddressUsedByIp("192.168.0.182")

public static string GetMacAddressUsedByIp(string ipAddress)
    {
        var ips = new List<string>();
        string output;

        try
        {
            // Start the child process.
            Process p = new Process();
            // Redirect the output stream of the child process.
            p.StartInfo.UseShellExecute = false;

            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.CreateNoWindow = true;
            p.StartInfo.FileName = "ipconfig";
            p.StartInfo.Arguments = "/all";
            p.Start();
            // Do not wait for the child process to exit before
            // reading to the end of its redirected stream.
            // p.WaitForExit();
            // Read the output stream first and then wait.
            output = p.StandardOutput.ReadToEnd();
            p.WaitForExit();

        }
        catch
        {
            return null;
        }

        // pattern to get all connections
        var pattern = @"(?xis) 
(?<Header>
     (\r|\n) [^\r]+ :  \r\n\r\n
)
(?<content>
    .+? (?= ( (\r\n\r\n)|($)) )
)";

        List<Match> matches = new List<Match>();

        foreach (Match m in Regex.Matches(output, pattern))
            matches.Add(m);

        var connection = matches.Select(m => new
        {
            containsIp = m.Value.Contains(ipAddress),
            containsPhysicalAddress = Regex.Match(m.Value, @"(?ix)Physical \s Address").Success,
            content = m.Value
        }).Where(x => x.containsIp && x.containsPhysicalAddress)
        .Select(m => Regex.Match(m.content, @"(?ix)  Physical \s address [^:]+ : \s* (?<Mac>[^\s]+)").Groups["Mac"].Value).FirstOrDefault();

        return connection;
    }

Answer 11

真的很讨厌挖掘这个老帖子，但我觉得这个问题值得Windows 8-10特有的另一个答案。

使用NetworkInformation命名空间中的Windows.Networking.Connectivity，您可以获取网络适配器窗口的ID正在使用。然后，您可以从前面提到的GetAllNetworkInterfaces（）中获取接口MAC地址。

这在Windows Store应用中不起作用，因为System.Net中的NetworkInterface .NetworkInformation不会公开GetAllNetworkInterfaces。

string GetMacAddress()
{
    var connectionProfile = NetworkInformation.GetInternetConnectionProfile();
    if (connectionProfile == null) return "";

    var inUseId = connectionProfile.NetworkAdapter.NetworkAdapterId.ToString("B").ToUpperInvariant();
    if(string.IsNullOrWhiteSpace(inUseId)) return "";

    var mac = NetworkInterface.GetAllNetworkInterfaces()
        .Where(n => inUseId == n.Id)
        .Select(n => n.GetPhysicalAddress().GetAddressBytes().Select(b=>b.ToString("X2")))
        .Select(macBytes => string.Join(" ", macBytes))
        .FirstOrDefault();

    return mac;
}

Answer 12

我非常喜欢具有最低IP连接指标的AVee解决方案！但是如果安装了具有相同度量的第二个nic，则MAC比较可能会失败......

最好用MAC存储接口的描述。在以后的比较中，您可以通过此字符串识别正确的nic。以下是示例代码：

   public static string GetMacAndDescription()
    {
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapterConfiguration where IPEnabled=true");
        IEnumerable<ManagementObject> objects = searcher.Get().Cast<ManagementObject>();
        string mac = (from o in objects orderby o["IPConnectionMetric"] select o["MACAddress"].ToString()).FirstOrDefault();
        string description = (from o in objects orderby o["IPConnectionMetric"] select o["Description"].ToString()).FirstOrDefault();
        return mac + ";" + description;
    }

    public static string GetMacByDescription( string description)
    {
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapterConfiguration where IPEnabled=true");
        IEnumerable<ManagementObject> objects = searcher.Get().Cast<ManagementObject>();
        string mac = (from o in objects where o["Description"].ToString() == description select o["MACAddress"].ToString()).FirstOrDefault();
        return mac;
    }

Answer 13

string mac = "";
foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
            {

                if (nic.OperationalStatus == OperationalStatus.Up && (!nic.Description.Contains("Virtual") && !nic.Description.Contains("Pseudo")))
                {
                    if (nic.GetPhysicalAddress().ToString() != "")
                    {
                        mac = nic.GetPhysicalAddress().ToString();
                    }
                }
            }
MessageBox.Show(mac);

Answer 14

foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
{
     if (nic.OperationalStatus == OperationalStatus.Up)
     {
            PhysicalAddress Mac = nic.GetPhysicalAddress();
     }
}

Answer 15

试试这个：

    /// <summary>
    /// returns the first MAC address from where is executed 
    /// </summary>
    /// <param name="flagUpOnly">if sets returns only the nic on Up status</param>
    /// <returns></returns>
    public static string[] getOperationalMacAddresses(Boolean flagUpOnly)
    {
        string[] macAddresses = new string[NetworkInterface.GetAllNetworkInterfaces().Count()];

        int i = 0;
        foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
        {
            if (nic.OperationalStatus == OperationalStatus.Up || !flagUpOnly)
            {
                macAddresses[i] += ByteToHex(nic.GetPhysicalAddress().GetAddressBytes());
                //break;
                i++;
            }
        }
        return macAddresses;
    }

Answer 16

稍微改变了blak3r他的代码。如果您有两个速度相同的适配器。按MAC排序，因此您总能获得相同的值。

public string GetMacAddress()
{
    const int MIN_MAC_ADDR_LENGTH = 12;
    string macAddress = string.Empty;
    Dictionary<string, long> macPlusSpeed = new Dictionary<string, long>();
    try
    {
        foreach(NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
        {
            System.Diagnostics.Debug.WriteLine("Found MAC Address: " + nic.GetPhysicalAddress() + " Type: " + nic.NetworkInterfaceType);

            string tempMac = nic.GetPhysicalAddress().ToString();

            if(!string.IsNullOrEmpty(tempMac) && tempMac.Length >= MIN_MAC_ADDR_LENGTH)
                macPlusSpeed.Add(tempMac, nic.Speed);
        }

        macAddress = macPlusSpeed.OrderByDescending(row => row.Value).ThenBy(row => row.Key).FirstOrDefault().Key;
    }
    catch{}

    System.Diagnostics.Debug.WriteLine("Fastest MAC address: " + macAddress);

    return macAddress;
}

Answer 17

ipconfig.exe使用各种DLL实现，包括iphlpapi.dll ... Google iphlpapi的Google搜索显示了MSDN中记录的相应Win32 API。

在C＃中获取机器MAC地址的可靠方法

17 个答案: