httpWebRequest使用POST方法 - 接收意外的xml響應

我需要使用POST發送一個字符串到服務器並獲得xml響應，狀態碼是OK，但字符串響應總是=「」（0字節）。我的代碼有什麼問題嗎？我檢查從黑莓，正常工作的服務器，所以這個問題必須來自我的代碼：httpWebRequest使用POST方法 - 接收意外的xml響應

 protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e) 
    { 
     s = NavigationContext.QueryString["parameter1"]; 
     //string strConnectUrl = "http://www.contoso.com/example.aspx"; 
     base.OnNavigatedTo(e); 
    //  DoWebClient(s); 
     try 
     { 

      HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(strConnectUrl); 
      httpWebRequest.Method = "POST"; 
      httpWebRequest.ContentType = "application/x-www-form-urlencoded;charset=UTF-8"; 
      // start the asynchronous operation 
      httpWebRequest.BeginGetRequestStream(new AsyncCallback(GetRequestStreamCallback), httpWebRequest); 
     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.ToString()); 
     } 
    } 

    private static void GetRequestStreamCallback(IAsyncResult asynchronousResult) 
    { 
     // string XML_REQUEST = "<?xml version=\"1.0\"?><mybroker"><getConnections></mybroker>"; 
     string post = "?&track=love"; 

     try 
     { 
      HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState; 

      // End the operation 
      Stream postStream = request.EndGetRequestStream(asynchronousResult); 

      // Convert the string into a byte array. 
      byte[] postBytes = Encoding.UTF8.GetBytes(post); 

      // Write to the request stream. 
      postStream.Write(postBytes, 0, postBytes.Length); 
      postStream.Close(); 

      // Start the asynchronous operation to get the response 
      request.BeginGetResponse(new AsyncCallback(GetResponseCallback), request); 
     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.ToString()); 
     } 
    } 
    static Stream str; 
    static string st; 
    private static void GetResponseCallback(IAsyncResult asynchronousResult) 
    { 

      HttpWebRequest request = (HttpWebRequest)asynchronousResult.AsyncState; 

      // End the operation 
      HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(asynchronousResult); 
      HttpStatusCode rcode = response.StatusCode; 
      Stream streamResponse = response.GetResponseStream(); 
      StreamReader streamRead = new StreamReader(streamResponse); 

     //****THIS ALWAYS RETURN "" VALUE, EXPECT TO RETURN XML STRING**** 
      string responseString = streamRead.ReadToEnd(); 

      //Console.WriteLine(responseString); 
      // Close the stream object 
      streamResponse.Close(); 
      streamRead.Close(); 
      // Release the HttpWebResponse 
      response.Close(); 
    }

*編輯** 的代碼工作，但服務器返回的參數要求和號（&）的我認爲不允許在silverlight框架中，刪除& char服務器響應，但結果不正確。我會問一個新的問題，請參考此＆符號

來源

2011-07-20 Nghia Nghia

可能值得檢查成功的rcode。 –