网络运营商会为每台联网的电脑分配公网IP，如何获取它们？？

话不多说直接上代码：

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Net;

using System.Text;

using System.Web;

using GW.ThirdOpenAPI.AdminWeb.Infrastructure;

namespace GW.ThirdOpenAPI.AdminWeb.Models.Common

{

    public class GetOutIpHelper

    {

        public static GetOutIpHelper Instance { get; } = new GetOutIpHelper();

        private string url = "http://ip.taobao.com/service/getIpInfo.php?ip=myip";

        public TaobaoData GetIPData()

        {

            string areaJson;

            TaobaoData theData;

            try

            {

                //创建请求

                WebRequest request = WebRequest.Create(url);

                //发送请求，获取相应s

                WebResponse response = request.GetResponse();

                using (Stream stream = response.GetResponseStream())  //获取响应的数据流

                {

                    using (StreamReader reader = new StreamReader(stream, Encoding.GetEncoding("utf-8")))  //指定的数据流初始化为StreamReader 类

                    {

                        areaJson = reader.ReadToEnd();  //读取数据流中的所有字符

                        theData = JsonHelper.Instance.Deserialize<TaobaoData>(areaJson);

                        if (theData.code == "1")  //表示获取数据失败

                        {

                            return null;

                        }

                        return theData;

                    }

                }

            }

            catch

            {

                return null;

            }

        }

    }

    public class TaobaoData

    {

        public string code { get; set; }

        public IPData data { get; set; }

    }

    public class IPData

    {

        /// <summary>

        ///  外网IP

        /// </summary>

        public string ip { get; set; }

        public string country { get; set; }

        public string area { get; set; }

        public string region { get; set; }

        public string city { get; set; }

        public string county { get; set; }

        /// <summary>

        ///  运营商

        /// </summary>

        public string isp { get; set; }

        public string country_id { get; set; }

        public string area_id { get; set; }

        public string region_id { get; set; }

        public string city_id { get; set; }

        public string county_id { get; set; }

        public string isp_id { get; set; }

    }

}