Get public/external IP address?

Using C#, With webclient its a short one.

public static void Main(string[] args)
{
    string externalIpString = new WebClient().DownloadString("http://icanhazip.com").Replace("\\r\\n", "").Replace("\\n", "").Trim();
    var externalIp = IPAddress.Parse(externalIpString);

    Console.WriteLine(externalIp.ToString());
}

Command Line (works on both Linux and Windows)

wget -qO- http://bot.whatismyipaddress.com

OR

curl http://ipinfo.io/ip

static void Main(string[] args)
{
    HTTPGet req = new HTTPGet();
    req.Request("http://checkip.dyndns.org");
    string[] a = req.ResponseBody.Split(':');
    string a2 = a[1].Substring(1);
    string[] a3=a2.Split('<');
    string a4 = a3[0];
    Console.WriteLine(a4);
    Console.ReadLine();
}

Do this small trick with Check IP DNS

Use HTTPGet class i found on Goldb-Httpget C#

With .Net WebRequest:

  public static string GetPublicIP()
    {
        string url = "http://checkip.dyndns.org";
        System.Net.WebRequest req = System.Net.WebRequest.Create(url);
        System.Net.WebResponse resp = req.GetResponse();
        System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
        string response = sr.ReadToEnd().Trim();
        string[] a = response.Split(':');
        string a2 = a[1].Substring(1);
        string[] a3 = a2.Split('<');
        string a4 = a3[0];
        return a4;
    }