external IP-address in C#

Question

What is the easiest way to get my external IP-address in C#?

Answer 1

There's no built-in way to do it within the framework because it's hard to determine what the external/public IP address is. This of course is assuming your IP is NAT'ed behind some gateway.

One method would be to scrape a site like http://www.whatismyip.org/ using the WebClient class.

System.Net.WebClient client = new System.Net.WebClient();
string ip = client.DownloadString( "http://www.whatismyip.org" );
Console.Out.WriteLine( ip );

Answer 2

public static string GetExternalIP()
{
     using (var wc = new System.Net.WebClient())
         return wc.DownloadString("http://whatismyip.org");
}