c# 、 Asp.net 获取本地IP和MAC地址

using System;
using System.Management;
using System.Net;  

 public class Program
    {
        static void Main(string[] args)
        {
            try
            {
                string ip = "";
                string mac = "";
                ManagementClass mc;
                string hostInfo = Dns.GetHostName();
                //IP地址
                //System.Net.IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList;这个过时
                  System.Net.IPAddress[] addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
                for (int i = ; i < addressList.Length; i++)
                {
                    ip = addressList[i].ToString();
                }
                //mac地址
                mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
                ManagementObjectCollection moc = mc.GetInstances();
                foreach (ManagementObject mo in moc)
                {
                    if (mo["IPEnabled"].ToString() == "True")
                    {
                        mac = mo["MacAddress"].ToString();
                    }
                }
                //输出
                string outPutStr = "IP:{0},\n MAC地址:{1}";
                outPutStr = string.Format(outPutStr, ip, mac);
                Console.WriteLine(outPutStr);
            }
            catch (Exception e)
            { }
            Console.ReadLine();
        }
    }  

第二种方式

        /// <summary>
        /// 获取Mac地址
        /// </summary>
        /// <param name="DestIP"></param>
        /// <param name="SrcIP"></param>
        /// <param name="pMacAddr"></param>
        /// <param name="PhyAddrLen"></param>
        /// <returns></returns>
        [DllImport("Iphlpapi.dll")]
        public static extern uint SendARP(uint DestIP, uint SrcIP, ref ulong pMacAddr, ref uint PhyAddrLen);
        public static string GetMac()
        {
            string p_Id = GetInternalIP();

            IPAddress _Address;
            if (!IPAddress.TryParse(p_Id, out _Address)) return "";
            uint DestIP = System.BitConverter.ToUInt32(_Address.GetAddressBytes(), );
            ulong pMacAddr = ;
            uint PhyAddrLen = ;
            uint error_code = SendARP(DestIP, , ref pMacAddr, ref PhyAddrLen);
            byte[] _Bytes1 = BitConverter.GetBytes(pMacAddr);
            return BitConverter.ToString(_Bytes1, , );
        }
        //获取内网IP
        protected static string GetInternalIP()
        {
            IPHostEntry host;
            string localIP = "?";
            host = Dns.GetHostEntry(Dns.GetHostName());
            foreach (IPAddress ip in host.AddressList)
            {
                if (ip.AddressFamily.ToString() == "InterNetwork")
                {
                    localIP = ip.ToString();
                    break;
                }
            }
            return localIP;
        }