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  • C#里获取IP地址方法整理【IPV4,IPV6】

    using System;
    
    namespace GetIpDemo
    {
        /// <summary>
        ///     C#里获取IP地址方法整理【IPV4,IPV6】
        ///     LDH @ 2021-11-19
        /// </summary>
        internal class Program
        {
            private static void Main()
            {
                Console.Title = "C#里获取IP地址方法整理【IPV4,IPV6】";
    
                var ipv4 = IpAddressHelper.GetIpV4();
                Console.WriteLine("IPV4:" + ipv4);
                PrintLine();
    
                var ipv6 = IpAddressHelper.GetIpV6();
                Console.WriteLine("IPV6:" + ipv6);
                PrintLine();
    
                var localIp = IpAddressHelper.GetLocalIp();
                Console.WriteLine("Local IP:" + localIp);
                PrintLine();
    
                var ip = IpAddressHelper.GetIpAddress();
                Console.WriteLine("IP:" + ip);
                PrintLine();
    
                var ipStr = "1888.555.666.666";
                var isIp = IpAddressHelper.IsIpStr(ipStr);
                PrintLine();
    
                if (isIp)
                    Console.WriteLine($"{ipStr}是合法的IP");
                else
                    Console.WriteLine($"{ipStr}是非法的IP");
                PrintLine();
    
                Console.ReadKey();
            }
    
            private static void PrintLine()
            {
                Console.WriteLine("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
            }
        }
    }
    using System.Net;
    using System.Net.Sockets;
    
    namespace GetIpDemo
    {
        /// <summary>
        ///     获取IP地址帮助类
        ///     LDH @ 2021-11-19
        /// </summary>
        public class IpAddressHelper
        {
            /// <summary>
            ///     获取本地IP地址信息
            /// </summary>
            public static string GetIpAddress()
            {
                //  获取本地的IP地址
                var addressIp = string.Empty;
    
                foreach (var ipAddress in Dns.GetHostEntry(Dns.GetHostName()).AddressList)
                    if (ipAddress.AddressFamily.ToString() == "InterNetwork")
                        addressIp = ipAddress.ToString();
    
                return addressIp;
            }
    
            /// <summary>
            ///     获取IPV4地址
            /// </summary>
            /// <returns>返回IPV4地址</returns>
            public static string GetIpV4()
            {
                // 本机名
                var hostName = Dns.GetHostName();
    
                // 方法已过期,IPV4地址
                var localhostIpV4 = Dns.GetHostByName(hostName);
                var ipV4Address = localhostIpV4.AddressList[0];
    
                var ipV4 = ipV4Address.ToString();
    
                return ipV4;
            }
    
            /// <summary>
            ///     获取IPV6地址
            /// </summary>
            /// <returns>返回IPV6地址</returns>
            public static string GetIpV6()
            {
                // 本机名
                var hostName = Dns.GetHostName();
    
                // IPV6 地址
                var localhostIpV6 = Dns.GetHostEntry(hostName);
                var ipV6Address = localhostIpV6.AddressList[0];
    
                var ipV6 = ipV6Address.ToString();
    
                return ipV6;
            }
    
            /// <summary>
            ///     获取本机IP地址
            /// </summary>
            /// <returns>获取本机IP地址</returns>
            public static string GetLocalIp()
            {
                try
                {
                    var HostName = Dns.GetHostName(); //得到主机名
                    var IpEntry = Dns.GetHostEntry(HostName);
                    for (var i = 0; i < IpEntry.AddressList.Length; i++)
                        // 从IP地址列表中筛选出IPv4类型的IP地址
                        //AddressFamily.InterNetwork表示此IP为IPv4,
                        //AddressFamily.InterNetworkV6表示此地址为IPv6类型
                        if (IpEntry.AddressList[i].AddressFamily == AddressFamily.InterNetwork)
                            return IpEntry.AddressList[i].ToString();
                }
                catch
                {
                    // ignored
                }
    
                return string.Empty;
            }
    
            /// <summary>
            ///     判读是否是IP地址
            /// </summary>
            /// <param name="ipStr">ip字符串</param>
            /// <returns>是否是IP地址</returns>
            public static bool IsIpStr(string ipStr)
            {
                IPAddress ip;
                return IPAddress.TryParse(ipStr, out ip);
            }
        }
    }

    本文作者:Love In Winter
    本文链接:https://www.cnblogs.com/LifeDecidesHappiness/p/15577072.html
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  • 原文地址:https://www.cnblogs.com/LifeDecidesHappiness/p/15577072.html
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