windows phone 7 通过Post提交URL到服务器,从服务器获取数据(比如登陆时候使用)

?

HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(UrlManager.Login());

            myRequest.Method = "POST";

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

 

            myRequest.BeginGetRequestStream(new AsyncCallback(GetRequestStreamCallback), myRequest);

 

 

 

private void GetRequestStreamCallback(IAsyncResult asynchronousResult)

        {

            HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState;

            System.IO.Stream postStream = request.EndGetRequestStream(asynchronousResult);

 

            // Prepare Parameters String

            string parametersString = "username=用户名&password=密码";

            //foreach (KeyValuePair<string, string> parameter in parameters)

            //{

            //    parametersString = parametersString + (parametersString != "" ? "&" : "") + string.Format("{0}={1}", parameter.Key, parameter.Value);

            //}

 

          

 

            byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(parametersString);

            // Write to the request stream.

            postStream.Write(byteArray, 0, parametersString.Length);

            postStream.Close();

            // Start the asynchronous operation to get the response

            request.BeginGetResponse(new AsyncCallback(GetResponseCallback), request);

        }

 

 

 

 private void GetResponseCallback(IAsyncResult asynchronousResult)

        {

            HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState;

            HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asynchronousResult);

            Stream streamResponse = response.GetResponseStream();

            StreamReader streamRead = new StreamReader(streamResponse);

            string responseString = streamRead.ReadToEnd();

            // Close the stream object

            streamResponse.Close();

            streamRead.Close();

       }