在C#环境中，要获取本机的IP地址，可以使用以下方法：
1、使用NetworkInterface类和IPAddress类：
using System;
using System.Net;
using System.Net.NetworkInformation;class Program
{static void Main(){// 获取本地计算机上的所有网络接口NetworkInterface[] networkInterfaces = NetworkInterface.GetAllNetworkInterfaces();foreach (NetworkInterface networkInterface in networkInterfaces){// 过滤掉非活动的接口和回环接口if (networkInterface.OperationalStatus == OperationalStatus.Up && networkInterface.NetworkInterfaceType != NetworkInterfaceType.Loopback){// 获取网络接口上的IP属性IPInterfaceProperties ipProperties = networkInterface.GetIPProperties();// 获取该接口上的所有IP地址foreach (UnicastIPAddressInformation ipAddressInfo in ipProperties.UnicastAddresses){// 过滤掉IPv6地址和非本地链接地址if (ipAddressInfo.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork && !IPAddress.IsLoopback(ipAddressInfo.Address)){Console.WriteLine("IP地址: " + ipAddressInfo.Address.ToString());}}}}Console.ReadLine();}
}2、 使用Socket 类：
using System;
using System.Net;
using System.Net.Sockets;class Program
{static void Main(){// 创建一个临时的Socket对象using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)){try{// 连接到一个外部IP地址（这里使用了一个公共的IP地址）socket.Connect("8.8.8.8", 65530);// 获取本地终结点信息IPEndPoint localEndPoint = (IPEndPoint)socket.LocalEndPoint;// 输出本地IP地址Console.WriteLine("本地IP地址: " + localEndPoint.Address);}catch (Exception ex){Console.WriteLine("获取本地IP地址失败: " + ex.Message);}}Console.ReadLine();}
}
3、使用System.Net类结合Dns.GetHostEntry方法：
using System;
using System.Net;class Program
{static void Main(){// 获取本地主机的相关信息IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName());// 遍历所有IP地址foreach (IPAddress ipAddress in host.AddressList){// 过滤掉IPv6地址和非本地链接地址if (ipAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork && !IPAddress.IsLoopback(ipAddress)){Console.WriteLine("IP地址: " + ipAddress.ToString());}}Console.ReadLine();}
}4、Dns.GetHostEntry方法结合Linq:
using System;
using System.Linq;
using System.Net;class Program
{static void Main(){// 获取本地主机的相关信息IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName());// 使用LINQ查询语句筛选出符合条件的IP地址var localIPs = from ipAddress in host.AddressListwhere ipAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork&& !IPAddress.IsLoopback(ipAddress)select ipAddress;// 输出本地IP地址foreach (IPAddress ipAddress in localIPs){Console.WriteLine("IP地址: " + ipAddress.ToString());}Console.ReadLine();}
}以上方法亲测有效，可以任选一个使用。
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