c# - Windows Phone - 如何获取 HTTP 状态代码？

Question

我不得不手动连接我的网络层。要针对 Web 服务运行查询，我使用以下代码:

public void RunService()
{
  string serviceUrl = Constants.URL_OF_SERVICE;
  WebRequest request = HttpWebRequest.Create(serviceUrl);
  request.BeginGetResponse(new AsyncCallback(Service_Completed), request);
}

private void Service_Completed(IAsyncResult result)
{
  try
  {
    WebRequest request = (WebRequest)(result.AsyncState);
    WebResponse response = request.EndGetResponse(result);

    // Continue doing stuff
  }
  catch (WebException ex1)
  {
    // How do I get the HTTP Status code here?
  }
}

发生错误时，我无法获取 HTTP 状态代码。有人可以告诉我如何在抛出 WebException 时获取 HTTP 状态代码吗？

谢谢!

Answer 1

使用 WebResponse part of the WebException :

catch (WebException ex1)
{
    using (HttpWebResponse response = (HttpWebResponse) ex1.Response)
    {
        if (response == null)
        {
            // Whatever
        }
        else
        {
            HttpStatusCode status = response.StatusCode;
            // Whatever
        }
    }
}