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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net.NetworkInformation;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading.Tasks;
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namespace PrintBarCode.Helper
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{
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public class NetworkHelper
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{
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/// <summary>
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/// 获取本地计算机的所有 IPv4 地址。
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/// </summary>
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/// <returns>IPv4 地址列表。如果没有找到,则返回一个空列表。</returns>
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public static List<string> GetLocalIPv4Addresses()
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{
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List<string> ipAddresses = new List<string>();
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try
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{
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// 获取所有网络接口
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var networkInterfaces = NetworkInterface.GetAllNetworkInterfaces();
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foreach (var networkInterface in networkInterfaces)
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{
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// 检查网络接口是否处于正常状态且不是回环接口
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if (networkInterface.OperationalStatus == OperationalStatus.Up &&
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networkInterface.NetworkInterfaceType != NetworkInterfaceType.Loopback)
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{
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// 获取该接口的IP属性
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var ipProperties = networkInterface.GetIPProperties();
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// 获取单播地址集合
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var unicastAddresses = ipProperties.UnicastAddresses;
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foreach (var address in unicastAddresses)
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{
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// 检查是否是 IPv4 地址
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if (address.Address.AddressFamily == AddressFamily.InterNetwork)
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{
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// 获取 IPv4 地址并添加到列表
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var ipAddress = address.Address.ToString();
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if (!string.IsNullOrEmpty(ipAddress) && !ipAddress.StartsWith("169.254")) // 排除自动私有地址
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{
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ipAddresses.Add(ipAddress);
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}
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}
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}
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}
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine("获取IP地址时发生错误: " + ex.Message);
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}
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return ipAddresses;
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}
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/// <summary>
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/// 获取本地计算机的第一个有效的 IPv4 地址。
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/// </summary>
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/// <returns>第一个有效的 IPv4 地址,如果没有找到则返回 null。</returns>
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public static string GetFirstLocalIPv4Address()
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{
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var ipAddresses = GetLocalIPv4Addresses();
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return ipAddresses.Count > 0 ? ipAddresses[0] : null;
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}
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}
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}
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