【转】C# 获取主机IP，Mac

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Management;
using System.Management.Instrumentation;
using System.Net;
namespace TaoBaoShuaId
{
    class TaoBaoShuaClass
    {
        #region 获得客户端外网IP地址
        /// <summary>
        /// 获得客户端外网IP地址
        /// </summary>
        /// <returns>IP地址</returns>
        public  string getClientInternetIPAddress()
        {
            string internetAddress = "";
            try
            {
                using (WebClient webClient = new WebClient())
                {
                    internetAddress = webClient.DownloadString("http://www.coridc.com/ip");//从外部网页获得IP地址
                    //判断IP是否合法
                    if (!System.Text.RegularExpressions.Regex.IsMatch(internetAddress, "[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}"))
                    {
                        internetAddress = webClient.DownloadString("http://fw.qq.com/ipaddress");//从腾讯提供的API中获得IP地址
                    }
                }
                //返回外网IP地址
                return internetAddress;
            }
            catch
            {
                return "外网IP地址：unknown";
            }
            finally
            {

            }
        }
        #endregion

        #region 获取Mac
        
       
        /// <summary>
        /// 获取Mac
        /// </summary>
        /// <returns></returns>
        public string getMac()
        {
            string MacAddr = null;
            ManagementObjectSearcher Query = new ManagementObjectSearcher("select * from Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection QueryCollection = Query.Get();
            foreach (ManagementObject mo in QueryCollection)
            {
                if (mo["IPEnabled"].ToString() == "True")
                    MacAddr = mo["MacAddress"].ToString();
            }
            return MacAddr;
        }
        #endregion
    }
}