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
我只是想添加我自己的一行代码(尽管已经有许多其他有用的答案)。
string ipAddress = new WebClient().DownloadString("http://icanhazip.com");
其他回答
using System;
using System.Net;
namespace IPADDRESS
{
class Program
{
static void Main(string[] args)
{
String strHostName = string.Empty;
if (args.Length == 0)
{
/* 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());
}
Console.ReadLine();
}
}
}
也许通过外部IP，您可以考虑(如果您在Web服务器上下文中)使用此方法
Request.ServerVariables["LOCAL_ADDR"];
我也在问你同样的问题，我在这篇stackoverflow的文章中找到了它。
这对我很管用。
试试这个:
IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());
String MyIp = localIPs[0].ToString();
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;
}
}
}
了解你的公共IP的唯一方法是让别人告诉你;这段代码可以帮助你:
public string GetPublicIP()
{
String direction = "";
WebRequest request = WebRequest.Create("http://checkip.dyndns.org/");
using (WebResponse response = request.GetResponse())
using (StreamReader stream = new StreamReader(response.GetResponseStream()))
{
direction = stream.ReadToEnd();
}
//Search for the ip in the html
int first = direction.IndexOf("Address: ") + 9;
int last = direction.LastIndexOf("</body>");
direction = direction.Substring(first, last - first);
return direction;
}
