错误WP7 HttpWebRequest调用方法

Question

我打电话给我的方法就像HttpWebRequest，它会给我这样的错误 我的代码是这样的。

HttpWebRequest objHttpWebRequest = System.Net.WebRequest.CreateHttp("http://url"); 
     objHttpWebRequest.BeginGetResponse(r => 
     { 
      WebResponse response = null; 
      try 
      { 
       response = objHttpWebRequest.EndGetResponse(r); //End Async Call to the URL 
       using (var stream = response.GetResponseStream()) 
       using (var reader = new StreamReader(stream)) //get data in StreamReader 
       { 
        string contents = reader.ReadToEnd(); //read content from reader and store it in content 
        XElement xmlResult = XElement.Parse(contents); 
        AEGAPI.clsGlobal.RandomToken = xmlResult.Value; 
       } 

我的错误报告是

System.NotSupportedException occurred 
    Message=Timeouts are not supported on this stream. 
    StackTrace: 
     at System.IO.Stream.get_WriteTimeout() 
     at MS.Internal.InternalNetworkStream.get_Length() 
     at System.IO.StreamReader.ReadToEnd() 
     at AEGAPI.clsAEGAPI.<>c__DisplayClass3.<Authenticate>b__0(IAsyncResult r) 
     at System.Net.Browser.ClientHttpWebRequest.<>c__DisplayClassa.<InvokeGetResponseCallback>b__8(Object state2) 
     at System.Threading.ThreadPool.WorkItem.WaitCallback_Context(Object state) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
     at System.Threading.ThreadPool.WorkItem.doWork(Object o) 
     at System.Threading.Timer.ring() 

感谢您的帮助！

Answer 1

使用WebClient.DownloadStringAsync（）会更简单吗？

void startDownload(Uri url) 
{ 
    WebClient wc = new WebClient(); 
    wc.DownloadStringCompleted += MyMethod; 
    wc.DownloadStringAsync(url); 
} 
void MyMethod(object sender, DownloadStringCompletedEventArgs e) 
{ 
    var contents = e.Result; 
    XElement xmlResult = XElement.Parse(contents); 
    AEGAPI.clsGlobal.RandomToken = xmlResult.Value; 
}