从.NET中的网络适配器读取MAC地址

Question

我希望能够使用VB.net或C＃（使用.NET 3.5 SP1）从第一个活动网络适配器读取mac地址以获取winform应用程序

Answer 1

自.Net 2.0以来，System.Net.NetworkInformation命名空间中有一个NetworkInterface类，它将为您提供此信息。试试这个：

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

Answer 2

来自http://www.dotnetjunkies.com/WebLog/jkirwan/archive/2004/02/10/6943.aspx

  Dim mc As System.Management.ManagementClass
  Dim mo As ManagementObject
  mc = New ManagementClass("Win32_NetworkAdapterConfiguration")
  Dim moc As ManagementObjectCollection = mc.GetInstances()
  For Each mo In moc
     If mo.Item("IPEnabled") = True Then
        ListBox1.Items.Add("MAC address " & mo.Item("MacAddress").ToString())
     End If
  Next

如果您需要

，我相信您可以毫不费力地将此代码移植到C＃

Answer 3

using Linq..

using System.Net.NetworkInformation;
..

NetworkInterface nic =
    NetworkInterface.GetAllNetworkInterfaces()
    .Where(n => n.OperationalStatus == OperationalStatus.Up).FirstOrDefault();

if (nic != null)
    return nic.GetPhysicalAddress().ToString();

Answer 4

这是一个可以做到的课程：

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace MacAddress
{
    class MacAddress
    {
        byte[] _address;

        public MacAddress(byte[] b)
        {
            if (b == null)
                throw new ArgumentNullException("b");
            if (b.Length != 8)
                throw new ArgumentOutOfRangeException("b");
            _address = new byte[b.Length];
            Array.Copy(b, _address, b.Length);
        }

        public byte[] Address { get { return _address; } }

        public override string ToString()
        {
            return Address[0].ToString("X2", System.Globalization.CultureInfo.InvariantCulture) + ":" +
                    Address[1].ToString("X2", System.Globalization.CultureInfo.InvariantCulture) + ":" +
                    Address[2].ToString("X2", System.Globalization.CultureInfo.InvariantCulture) + ":" +
                    Address[3].ToString("X2", System.Globalization.CultureInfo.InvariantCulture) + ":" +
                    Address[4].ToString("X2", System.Globalization.CultureInfo.InvariantCulture) + ":" +
                    Address[5].ToString("X2", System.Globalization.CultureInfo.InvariantCulture);
        }

        public static List<MacAddress> GetMacAddresses()
        {
            int size = 0;
            // this chunk of code teases out the first adapter info
            int r = GetAdaptersInfo(null, ref size);
            if ((r != IPConfigConst.ERROR_SUCCESS) && (r != IPConfigConst.ERROR_BUFFER_OVERFLOW))
            {
                return null;
            }
            Byte[] buffer = new Byte[size];
            r = GetAdaptersInfo(buffer, ref size);
            if (r != IPConfigConst.ERROR_SUCCESS)
            {
                return null;
            }
            AdapterInfo Adapter = new AdapterInfo();
            ByteArray_To_IPAdapterInfo(ref Adapter, buffer, Marshal.SizeOf(Adapter));

            List<MacAddress> addresses = new List<MacAddress>();
            do
            {
                addresses.Add(new MacAddress(Adapter.Address));
                IntPtr p = Adapter.NextPointer;
                if (p != IntPtr.Zero)
                {
                    IntPtr_To_IPAdapterInfo(ref Adapter, p, Marshal.SizeOf(Adapter));
                }
                else
                {
                    break;
                }
            } while (true);
            return addresses;
        }

        // glue definitions into windows
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        private struct IPAddrString
        {
            public IntPtr NextPointer;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 4 * 4)]
            public String IPAddressString;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 4 * 4)]
            public String IPMaskString;
            public int Context;
        }

        private class IPConfigConst
        {
            public const int MAX_ADAPTER_DESCRIPTION_LENGTH = 128;
            public const int MAX_ADAPTER_NAME_LENGTH = 256;
            public const int MAX_ADAPTER_ADDRESS_LENGTH = 8;
            public const int ERROR_BUFFER_OVERFLOW = 111;
            public const int ERROR_SUCCESS = 0;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        private struct AdapterInfo
        {
            public IntPtr NextPointer;
            public int ComboIndex;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = IPConfigConst.MAX_ADAPTER_NAME_LENGTH + 4)]
            public string AdapterName;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = IPConfigConst.MAX_ADAPTER_DESCRIPTION_LENGTH + 4)]
            public string Description;
            public int AddressLength;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = IPConfigConst.MAX_ADAPTER_ADDRESS_LENGTH)]
            public Byte[] Address;
            public int Index;
            public int Type;
            public int DhcpEnabled;
            public IntPtr CurrentIPAddress;
            public IPAddrString IPAddressList;
            public IPAddrString GatewayList;
            public IPAddrString DhcpServer;
            public Boolean HaveWins;
            public IPAddrString PrimaryWinsServer;
            public IPAddrString SecondaryWinsServer;
            public int LeaseObtained;
            public int LeaseExpires;
        }
        [DllImport("Iphlpapi.dll", CharSet = CharSet.Auto)]
        private static extern int GetAdaptersInfo(Byte[] PAdapterInfoBuffer, ref int size);
        [DllImport("Kernel32.dll", EntryPoint = "CopyMemory")]
        private static extern void ByteArray_To_IPAdapterInfo(ref AdapterInfo dst, Byte[] src, int size);
        [DllImport("Kernel32.dll", EntryPoint = "CopyMemory")]
        private static extern void IntPtr_To_IPAdapterInfo(ref AdapterInfo dst, IntPtr src, int size);
    }
}

这是一些测试代码：

        List<MacAddress> addresses = MacAddress.GetMacAddresses();
        foreach (MacAddress address in addresses)
        {
            Console.WriteLine(address);
        }

我确信ToString方法可能会更好，但它可以完成任务。

Answer 5

你需要DllImport GetAdaptersInfo - 这里有一些C＃代码

http://www.codeguru.com/cpp/i-n/network/networkinformation/comments.php/c5451/?thread=60212

Answer 6

看起来这是一个老帖子，但我知道你会遇到这个线程寻求帮助所以这就是我今天所做的，以获取笔记本电脑中所有网络接口的MAC地址。

首先，您必须导入以下内容

Imports System.Net.NetworkInformation

这是返回字符串数组中所有MAC地址的函数

Private Function GetMAC() As String()
    Dim MACAddresses(0) As String
    Dim i As Integer = 0
    Dim NIC As NetworkInterface

    For Each NIC In NetworkInterface.GetAllNetworkInterfaces
        ReDim Preserve MACAddresses(i)
        MACAddresses(i) = String.Format("{0}", NIC.GetPhysicalAddress())
        i += 1
    Next
    Return MACAddresses
End Function

Answer 7

对于使用更有限的Compact Framework（.NET v2.0 CF）的任何人，以下代码适用于Windows CE 5.0和CE 6.0（只读取适配器名称，但在MSDN上搜索“typedef struct _IP_ADAPTER_INFO”以获取返回的结构的完整定义）：

private const int MAX_ADAPTER_NAME_LENGTH = 256;
[DllImport ("iphlpapi.dll", SetLastError = true)]
private static extern int GetAdaptersInfo(byte[] abyAdaptor, ref int nSize);

// ...
private static string m_szAdaptorName = "DM9CE1";

// ...
private void GetNetworkAdaptorName()
{
    // The initial call is to determine the size of the memory required. This will fail
    // with the error code "111" which is defined by MSDN to be "ERROR_BUFFER_OVERFLOW".
    // The structure size should be 640 bytes per adaptor.
    int nSize = 0;
    int nReturn = GetAdaptersInfo(null, ref nSize);

    // Allocate memory and get data
    byte[] abyAdapatorInfo = new byte[nSize];
    nReturn = GetAdaptersInfo(abyAdapatorInfo, ref nSize);
    if (nReturn == 0)
    {
        // Find the start and end bytes of the name in the returned structure
        int nStartNamePos = 8;
        int nEndNamePos = 8;
        while ((abyAdapatorInfo[nEndNamePos] != 0) &&
                    ((nEndNamePos - nStartNamePos) < MAX_ADAPTER_NAME_LENGTH))
        {
            // Another character in the name
            nEndNamePos++;
        }

        // Convert the name from a byte array into a string
        m_szAdaptorName = Encoding.UTF8.GetString(
            abyAdapatorInfo, nStartNamePos, (nEndNamePos - nStartNamePos));
    }
    else
    {
        // Failed? Use a hard-coded network adaptor name.
        m_szAdaptorName = "DM9CE1";
    }
}