Post Data In ASP.NET

POST:

 WebRequest request = WebRequest.Create("post url");
 String postdata;
 Byte[] bytedata;
postdata="key=xxx&value=yyyy";
 bytedata = Encoding.UTF8.GetBytes(postdata);
            request.ContentLength = bytedata.Length;
            request.ContentType = "application/x-www-form-urlencoded";
            request.Method = "POST";
            Stream dataStream = request.GetRequestStream();
            dataStream.Write(bytedata, 0, bytedata.Length);
            dataStream.Close();

GET RESPONSE:

 WebResponse response = request.GetResponse();
            dataStream = response.GetResponseStream();
            StreamReader reader =new StreamReader (dataStream);
            String responseFromServer = reader.ReadToEnd();

REQUEST POST DATA:

NameValueCollection nvc = Request.Form
String key;
String value;
        key = nvc("key");
        value=nvc("value");

Do let me know if anything wrong.