Get A Computer's Dynamic Public IP Address

Question

I've managed to get my static IP Address and some other mac addresses.

Using this code :

IPAddress[] addr = Dns.GetHostEntry( Dns.GetHostName() ).AddressList;
string dynamicip = addr[addr.Length - 3].ToString();

Any idea how to get the dynamic public address like the one on the site whatismyip.com?

Take a look at this [Post](http://stackoverflow.com/questions/66363/get-external-ip-address-over-remoting-in-c) — Mark Kram, Jun 09 '11 at 00:26
You cannot do it without a 3rd party -- you need some site outside your network that can respond with the IP it saw your traffic from. — Joe, Jun 09 '11 at 00:29

score 5 · Answer 1 · answered Jun 09 '11 at 00:30

whatismyip.com has an api (sort of) setup for this purpose here. you can use

public static IPAddress GetExternalIP()
{
        string url = "http://www.whatismyip.com/automation/n09230945.asp";
        WebClient webClient = new WebClient();
        string response = utf8.GetString(webClient .DownloadData(whatIsMyIp));
        IPAddress ip = IPAddress.Parse(response);
        return ip;   
}

score 0 · Answer 2 · edited May 23 '17 at 12:12

0

for IP Address you can use HttpContext.Current.Request.UserHostAddress;

for windows form check How to detect static ip using win app in c#

brgds

edited May 23 '17 at 12:12

Community

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answered Jun 09 '11 at 00:25

s_h

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nop, this is not the solution for windows form. that is for asp. I added a stack post explaining for winforms – s_h Jun 09 '11 at 00:29
@ sebastian_h, suppose if I want a product registration by detecting the ipaddress of the windows application's computer, how can I achieve if the computer is behind a router with static ip address ? – Coder323 Jun 09 '11 at 01:43

score 0 · Accepted Answer · edited May 23 '17 at 12:12

0

I think this is probably the question that you're asking: How to get the IP address of the server on which my C# application is running on?

edited May 23 '17 at 12:12

Community

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answered Jun 09 '11 at 00:31

elRobbo

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Get A Computer's Dynamic Public IP Address

3 Answers3