winform异步获取POST过来的XML

            if (!HttpListener.IsSupported)
            {
                MessageBox.Show("本系统只支持xp sp2/win2003");
                return;
            }
            System.Net.HttpListener httplistener = new System.Net.HttpListener();
            string s = string.Format(XMLTools.getXmlValue("LCListenerAddress","Address"));
            httplistener.Prefixes.Add(s);
            httplistener.Start();
            while (true)
            {
                System.IAsyncResult ia2 = httplistener.BeginGetContext(
                    delegate(System.IAsyncResult ia)
                    {
                        var request = (HttpListener)ia.AsyncState;
                        var a = request.EndGetContext(ia);

                        XmlDocument doc = new XmlDocument();
                        StreamReader inputStream = new StreamReader(a.Request.InputStream);
                        string xml = inputStream.ReadToEnd();
                        doc.LoadXml(xml);
                    },
                    httplistener
                );


                System.Threading.Thread.Sleep(1000);

            }