c#获取IP及HostName

直接调用系统库获取

using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;

        

　　　　 static void Main(string[] args)
        {
            Console.WriteLine(GetHostIP(AddressFamily.InterNetwork));
            Console.WriteLine(GetHostIP(AddressFamily.InterNetworkV6));

        }
        /// <summary>
        /// 获取主机名及IP
        /// </summary>
        /// <param name="addressType"></param>
        /// <returns></returns>
        public static string GetHostIP(AddressFamily addressType)
        {

            var hostName = Dns.GetHostName(); //获取主机名
            var ipEntry = Dns.GetHostEntry(hostName);
            foreach (var item in ipEntry.AddressList)
            {
                if (item.AddressFamily == addressType)
                {
                    return item.ToString();
                }
            }
            return "";
        }