C#

foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
            {
                if (ni.NetworkInterfaceType == NetworkInterfaceType.Ethernet)
                {
                    Console.WriteLine(ni.Name);
                    foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
                    {
                        if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                        {
                            Console.WriteLine(ip.Address.ToString());
                        }
                    }
                }
            }

string urlAddress = "http://somesite.com";
string ReadPage()
{
    string page = "";
    HttpWebRequest request;
    HttpWebResponse response = null;
    Stream stream = null;
    request = (HttpWebRequest)WebRequest.Create(urlAddress);
    request.UserAgent = "Foo";
    request.Accept = "*/*";
    response = (HttpWebResponse)request.GetResponse();
    stream = response.GetResponseStream();

    StreamReader sr = new StreamReader(stream, System.Text.Encoding.Default);
    page = sr.ReadToEnd();
    if (stream != null) stream.Close();
    if (response != null) response.Close();
    //-------------------------------------------------------------
    return page;
}