获取本机和目标机的MAC地址

获取本机和目标机的MAC地址：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Management;
using System.Runtime.InteropServices;
using System.Net;

namespace GetMac
{
    class Program
    {
        [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);

        //获取本机的IP
        public string getLocalIP()
        {
            string strHostName = Dns.GetHostName(); //得到本机的主机名
            IPHostEntry ipEntry = Dns.GetHostByName(strHostName); //取得本机IP
            string strAddr = ipEntry.AddressList[0].ToString();
            return (strAddr);
        }
        //获取本机的MAC
        public string getLocalMac()
        {
            string mac = null;
            ManagementObjectSearcher query = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection queryCollection = query.Get();
            foreach (ManagementObject mo in queryCollection)
            {
                if (mo["IPEnabled"].ToString() == "True")
                    mac = mo["MacAddress"].ToString();
            }
            return (mac);
        }

        //获取远程主机IP
        public string[] getRemoteIP(string RemoteHostName)
        {
            IPHostEntry ipEntry = Dns.GetHostByName(RemoteHostName);
            IPAddress[] IpAddr = ipEntry.AddressList;
            string[] strAddr = new string[IpAddr.Length];
            for (int i = 0; i < IpAddr.Length; i++)
            {
                strAddr[i] = IpAddr[i].ToString();
            }
            return (strAddr);
        }


        //获取远程主机MAC
        public string getRemoteMac(string localIP, string remoteIP)
        {
            Int32 ldest = inet_addr(remoteIP); //目的ip 
            Int32 lhost = inet_addr(localIP); //本地ip 

            try
            {
                Int64 macinfo = new Int64();
                Int32 len = 6;
                int res = SendARP(ldest, 0, ref macinfo, ref len);
                return Convert.ToString(macinfo, 16);
            }
            catch (Exception err)
            {
                Console.WriteLine("Error:{0}", err.Message);
            }
            return 0.ToString();
        }

        static void Main(string[] args)
        {
            Program gi = new Program();
            Console.WriteLine("本地网卡信息:");
            Console.WriteLine(gi.getLocalIP() + " - " + gi.getLocalMac());
            Console.ReadKey();

            Console.WriteLine("\n\r远程网卡信息:");
            string[] temp = gi.getRemoteIP("WKS049");//目标机名
            for (int i = 0; i < temp.Length; i++)
            {
                Console.WriteLine(temp[i]);
            }

            string remote = gi.getRemoteMac("13.0.0.26", "13.0.0.103");//本机IP和目标机IP
            StringBuilder b = new StringBuilder();
            for (int i = remote.Length - 2; i >= 0; i = i - 2)
            {
                b.Append(remote.Substring(i, 2));
                b.Append(":");
            }
            if (b.Length > 1)
            {
                b.Remove(b.Length - 1, 1);
            }
            Console.Write(b);
            Console.ReadKey();
        }

    }
}