我正在运行一个服务器，我想显示我自己的IP地址。
获取计算机自身(如果可能的话，外部)IP地址的语法是什么?
有人编写了以下代码。
IPHostEntry host;
string localIP = "?";
host = Dns.GetHostEntry(Dns.GetHostName());
foreach (IPAddress ip in host.AddressList)
{
if (ip.AddressFamily.ToString() == "InterNetwork")
{
localIP = ip.ToString();
}
}
return localIP;
然而，我通常不信任作者，我不理解这段代码。有更好的方法吗?
当前回答
namespace NKUtilities
{
using System;
using System.Net;
public class DNSUtility
{
public static int Main (string [] args)
{
String strHostName = new String ("");
if (args.Length == 0)
{
// Getting Ip address of local machine...
// First get the host name of local machine.
strHostName = Dns.GetHostName ();
Console.WriteLine ("Local Machine's Host Name: " + strHostName);
}
else
{
strHostName = args[0];
}
// Then using host name, get the IP address list..
IPHostEntry ipEntry = DNS.GetHostByName (strHostName);
IPAddress [] addr = ipEntry.AddressList;
for (int i = 0; i < addr.Length; i++)
{
Console.WriteLine ("IP Address {0}: {1} ", i, addr[i].ToString ());
}
return 0;
}
}
}
其他回答
WebClient webClient = new WebClient();
string IP = webClient.DownloadString("http://myip.ozymo.com/");
如果你想避免使用DNS:
List<IPAddress> ipList = new List<IPAddress>();
foreach (var netInterface in NetworkInterface.GetAllNetworkInterfaces())
{
foreach (var address in netInterface.GetIPProperties().UnicastAddresses)
{
if (address.Address.AddressFamily == AddressFamily.InterNetwork)
{
Console.WriteLine("found IP " + address.Address.ToString());
ipList.Add(address.Address);
}
}
}
清洁和一体解决方案:D
//This returns the first IP4 address or null
return Dns.GetHostEntry(Dns.GetHostName()).AddressList.FirstOrDefault(ip => ip.AddressFamily == AddressFamily.InterNetwork);
如果你在内部网络中运行，你将能够获得本地机器的IP地址，如果不是，你将获得外部IP地址: 网络:
//this will bring the IP for the current machine on browser
System.Web.HttpContext.Current.Request.UserHostAddress
桌面:
//This one will bring all local IPs for the desired namespace
IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());
为了找到IP地址列表，我已经使用了这个解决方案
public static IEnumerable<string> GetAddresses()
{
var host = Dns.GetHostEntry(Dns.GetHostName());
return (from ip in host.AddressList where ip.AddressFamily == AddressFamily.lo select ip.ToString()).ToList();
}
但我个人喜欢下面的解决方案，以获得本地有效的IP地址
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();
}
