如何使用c＃获取用户IP地址 [英] How to Get User IP address using c#

问题描述

我需要获得用户ipaddress ....我使用下面的代码

i need to get user ipaddress....i use below code

private string GetIP()
    {
        string strHostName = "";
        strHostName = System.Net.Dns.GetHostName();

        IPHostEntry ipEntry = System.Net.Dns.GetHostEntry(strHostName);

        IPAddress[] addr = ipEntry.AddressList;

        return addr[addr.Length - 1].ToString();

    }

它在本地网站上运行...但是在发布我的网站后它返回ipaddress格式如下：

2001：0：4137：9e76：3c60：3e18：935c：505

i不知道我的错误..我怎样才能得到ipaddress。 ..

如果有人知道我的错误解释了我..





谢谢你提前..

it worked in local site...But after publish my site it returns ipaddress in the below format:
"2001:0:4137:9e76:3c60:3e18:935c:505"
i don't know my mistake.. How can i get ipaddress...
if anyone know my mistake explain me..


Thanks n advance..

推荐答案

以下是获取所有有效IP4地址列表的解决方案

Here is the solution to get all valid IP4 Address list

public static IEnumerable<string> GetAddresses()
{
     var host = Dns.GetHostEntry(Dns.GetHostName());
     return (from ip in host.AddressList where ip.AddressFamily == AddressFamily.InterNetwork select ip.ToString()).ToList();
}
</string>

上述解决方案AddressFamily.InterNetwork过滤来自AddressFamily的IP4地址。



如果你想要你的系统有效的IP地址，我个人建议在下面的解决方案

on the above solution AddressFamily.InterNetwork filters the IP4 address from AddressFamily.

If you want your system valid IP address, I personally suggest below solution

public static IPAddress GetIPAddress(string hostName)
{
    Ping ping = new Ping();
    var replay = ping.Send(hostName);

    if (replay.Status == IPStatus.Success)
    {
        return replay.Address;
    }
    return null;
 }

public static void Main()
{
    Console.WriteLine("Local IP Address: " + GetIPAddress(Dns.GetHostName()));
    Console.WriteLine("Google IP:" + GetIPAddress("google.com");
    Console.ReadLine();
}

使用

Use

using System;
using System.Net;

public class IPNetworking
{
  public static string GetIP4Address()
  {
    string IP4Address = String.Empty;

    foreach (IPAddress IPA in Dns.GetHostAddresses(Request.ServerVariables["REMOTE_ADDR"].ToString())))
    {
      if (IPA.AddressFamily.ToString() == "InterNetwork")
      {
        IP4Address = IPA.ToString();
        break;
      }
    }

    if (IP4Address != String.Empty)
    {
      return IP4Address;
    }

    foreach (IPAddress IPA in Dns.GetHostAddresses(Dns.GetHostName()))
    {
      if (IPA.AddressFamily.ToString() == "InterNetwork")
      {
        IP4Address = IPA.ToString();
        break;
      }
    }

    return IP4Address;
  }
}

试试这个，它会返回你的IP地址

try this, it will return your IP Address

string ip = "";
string strHostName = "";
strHostName = System.Net.Dns.GetHostName();

IPHostEntry ipEntry = System.Net.Dns.GetHostEntry(strHostName);

IPAddress[] addr = ipEntry.AddressList;

ip = addr[2].ToString();

这篇关于如何使用c＃获取用户IP地址的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！