How to read the data from request URL and response stream value to request URL?

HttpWebRequest class sending the data using streamwriter and getting response from particular URL.

ex..

string strUrl="website";
HttpWebRequest request = WebRequest.Create(string.Format(strUrl, "valid")) as HttpWebRequest;
request.Method = strMethod;
            request.ContentType = "text/xml; charset=utf-8";
            request.ContentLength = PostData.Length;
            request.KeepAlive = false;
            writer = new StreamWriter(request.GetRequestStream());
            writer.Write(PostData);
            writer.Close();

            HttpWebResponse Response = (HttpWebResponse)request.GetResponse();
            Stream GetDataStream = Response.GetResponseStream();
            StreamReader GetDatafromStream = new StreamReader(GetDataStream);
            acknownledgementresp = GetDatafromStream.ReadToEnd();

In ASPX Page

         System.IO.Stream str;
        Int32 strLen, strRead;
        str = Request.InputStream;
        strLen = Convert.ToInt32(str.Length);
        byte[] strArr = new byte[strLen];
        strRead = str.Read(strArr, 0, strLen);
        string DataReceived = System.Text.Encoding.Default.GetString(strArr);

        Response.ContentType = "text";
        Response.Clear();
        Response.BufferOutput = false;
        byte[] bytes = System.Text.Encoding.UTF8.GetBytes(ReceivedData);
        Response.OutputStream.Write(bytes, 0, bytes.Length);
        Response.Flush();
        Response.End();