Problem retrieving data with Webclient

Question

Hi to everyone,i have a problem with my app that should retrive data from some websites.

I use this code to make a http POST request but i don't retrieve the correct data,probably because the website use iframes

The code I use is:

public static string HttpPost(string URI, string Parameters)

        {

            try

            {

            System.Net.WebRequest req = System.Net.WebRequest.Create(URI);

            req.ContentType = "application/x-www-form-urlencoded";

            req.Method = "POST"; 

            byte[] bytes = System.Text.Encoding.ASCII.GetBytes(Parameters);

            req.ContentLength = bytes.Length;

            System.IO.Stream os = req.GetRequestStream();

            os.Write(bytes, 0, bytes.Length);

            //os.Close();

            System.Net.WebResponse resp= req.GetResponse();

           

            if (resp == null) return null;

            System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());

            return sr.ReadToEnd().Trim();

            }

            catch (Exception ex) { }

            return null;    

        }

-----------------------------------------

// naviga();

            Http.Post("http://89.137.253.14/Iast.php", new NameValueCollection() {

    { "imei", "013270000134001" }

});

The main website is :  http://sickw.com/index.html

As you can see if you make a direct GET or POST reuest using the url on the Form you receive a page error and that is what i receive using my app.

It's only a website example and if someone can help me i will happy to contribute with a donation too.

I need to receive the complete source page like using a browser

Thanks