怎么获取本机的IP地址？

[dhxyxiaofeng]

同上

[易企加_天马行空]

public static IPAddress GetIPAddress()
{
try
{
string ipAddressStr = "";
IPHostEntry entry = Dns.GetHostEntry("");
foreach (IPAddress address in entry.AddressList)
{
if (address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
return address;
}
}
return entry.AddressList[0];
}
catch
{
return IPAddress.Parse("127.0.0.1");
}
}

[易企加_天马行空]

using System.Net;
using System.Diagnostics;

[wuyi8808]

在局域网内获取本机的外部IP

“ipconfig.exe /all”在局域网中只能获取内部IP, 无法获取本机的外部IP, Dns.Resolve()也一样。

经研究, 在局域网中, 仅凭本机的力量是无法获得本机的外部IP的, 必须登录到外网某个服务器, 那个服务器就知道你的IP, 然后你再取回来。

using System;
using System.IO;
using System.Net;
using System.Text.RegularExpressions;

class Test
{
  // 获取网页的HTML内容
  static string GetPage(string url)
  {
    HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
    try
    {
      using (HttpWebResponse res = (HttpWebResponse)req.GetResponse())
      {
        using (StreamReader sr = new StreamReader(res.GetResponseStream()))
        {
          return sr.ReadToEnd();
        }
      }
    }
    catch (System.Exception e)
    {
      return e.Message;
    }
    finally
    {
      req.Abort();
    }
  }

  // 通过外部网站得到本机的外部IP
  static string GetOuterIP()
  {
    string patt = @"IP: \[(?<IP>[0-9\.]*)\]";
    string url  = "http://www.skyiv.com/info";
    return Regex.Match(GetPage(url), patt).Groups["IP"].Value;
  }

  static void Main()
  {
    Console.WriteLine("Inner IP:");
    foreach (IPAddress ip in Dns.Resolve(Dns.GetHostName()).AddressList)
    {
      Console.WriteLine(ip);
    }
    Console.WriteLine();
    Console.WriteLine("Outer IP:");
    Console.WriteLine(GetOuterIP());
  }
}

[laochou13]

MARK

[dhxyxiaofeng]

Dns.GetHostByName(Dns.GetHostName()).AddressList[0]

谢谢了

[feversteven]

学习

[阿达King哥]

Dns.GetHostByName(Dns.GetHostName()).AddressList[0]