Silverligh中使用HttpWebRequest

在Silverlight beta 2 中，所有的 Network Communication 都只提供了APM的方式，调用方法都很简单
话多浪费时间，源码附上先

AccessPolicyDemo.xaml.cs:

 

 

    public partial class AccessPolicyDemo : UserControl
    {
        private delegate void DispatcherInvoke(string param);
        public AccessPolicyDemo()
        {
            InitializeComponent();
        }

        private void Button1_Click(object sender, RoutedEventArgs e)
        {
             Uri uri = new Uri("http://localhost/SLDemoWeb/Default.aspx");                 WebRequest request = WebRequest.Create(uri);
             request.Method = "POST";
             request.BeginGetRequestStream((AsyncCallback)RequestHandler, request);
        }
        private void RequestHandler(IAsyncResult ar)
        {
            WebRequest request = ar.AsyncState as WebRequest;
            using (StreamWriter sw = new StreamWriter(request.EndGetRequestStream(ar)))
            {
                sw.Write("Silverlight is perfect platform.");
            }
            request.BeginGetResponse((AsyncCallback)ResponseHandler, request);
        }
       
        private void ResponseHandler(IAsyncResult ar)
        {
            WebRequest request = ar.AsyncState as WebRequest;
            using (WebResponse response = request.EndGetResponse(ar))
            {
                using (Stream streram = response.GetResponseStream())
                {
                    using (StreamReader sr = new StreamReader(streram))
                    {
                        Result.Dispatcher.BeginInvoke((DispatcherInvoke)ShowResult,sr.ReadToEnd());
                    }
                }
            }
        }

        void ShowResult(string result)
        {
            Result.Text = result;
        }
    }

 

页面代码就不用帖了，就一个Button + TextBlock

下面是default.aspx.cs的

 

 protected void Page_Load(object sender, EventArgs e)
        {
            StringBuilder sb = new StringBuilder("The content that client send to server:\r\n");
            if (Request.InputStream == null || Request.InputStream.Length <= 0)
                sb.Append("Fuck,it's nothing.");
            else
                using (Stream inputStream = Request.InputStream)
                {
                    using (StreamReader sr = new StreamReader(inputStream))
                    {
                        sb.Append(sr.ReadToEnd());
                    }
                }
            Response.Write(sb.ToString());
            Response.End();
        }

 

运行后结果的screenshot

 

 

在找资料学习的时候，找到一个老外写的一个HttpWebRequest的helper class，很好用的，详细点这里查看

关于跨域访问下集再说

好了，我的第一篇博文就这样了。