首先找到资源管理器里的引用，右击添加引用：System.Management;

1. using System;
2. using System.Management;
4. namespace ConsoleApplication1
5. {
6.     class Program
7.     {
8.         static void Main(string[] args)
9.         {
10.             ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
11.             ManagementObjectCollection nics = mc.GetInstances();
12.             foreach (ManagementObject nic in nics)
13.             {
14.                 if (Convert.ToBoolean(nic["ipEnabled"]) == true)
15.                 {
16.                     Console.WriteLine((nic["IPAddress"] as String[])[0]);
17.                     Console.WriteLine((nic["IPSubnet"] as String[])[0]);
18.                     Console.WriteLine((nic["DefaultIPGateway"] as String[])[0]);
19.                 }
20.             }
21.         }
22.     }
23. }