3

我正在尝试使用 WP7 上的 HttpWebRequest 类发送请求,但没有得到任何响应......这是我的代码:

            InitializeComponent();
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.google.com/");
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream dataStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(dataStream);
            tbResponse.Text = reader.ReadToEnd();

            // Cleanup the streams and the response.
            reader.Close();
            dataStream.Close();
            response.Close();
            Console.ReadLine();

此外,我使用了这个扩展:点击这里,但是我在 Windows 控制台应用程序上测试它并没有任何问题,所以我认为问题是我对 WP7 不了解。

4

1 回答 1

6

您需要像这样发出异步请求:

var webRequest = (HttpWebRequest)HttpWebRequest.Create(Url);
webRequest.BeginGetResponse(new AsyncCallback(request_CallBack), webRequest );

和响应处理程序:

void request_CallBack(IAsyncResult result)
{
        var webRequest = result.AsyncState as HttpWebRequest;
        var response = (HttpWebResponse)WebRequest.EndGetResponse(result);
        var baseStream = response.GetResponseStream();

            // if you want to read binary response
            using (var reader = new BinaryReader(baseStream))
            {
                DataBytes = reader.ReadBytes((int)baseStream.Length);
            }

            // if you want to read string response
            using (var reader = new StreamReader(baseStream))
            {
                Result = reader.ReadToEnd();
            }
}

这是我开发的一个帮助类,用于在开发 windows phone 7 应用程序期间处理我的 web 请求需求:

http://www.manorey.net/mohblog/?p=17&preview=true

于 2011-06-28T19:53:27.923 回答