Silverlight GET ,POST

1.Get请求

cs:

 private void Download()

        {

            string url = "http://localhost:13936/GetData.aspx?id=getwangk";

            WebClient client = new WebClient();

            client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(DownloadBind);

            client.DownloadStringAsync(new Uri(url));

        }



        private void DownloadBind(object sender, DownloadStringCompletedEventArgs e)

        {

            if (e.Error == null)

            {

                tb.Text = e.Result;

            }

            else

            {

                tb.Text = "错误信息" + e.Error.Message;

            }

        }

2.Post 请求

xaml:

<UserControl x:Class="RhythmkSilverlightApp.Primary.SimplifyPost"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

    mc:Ignorable="d"

    d:DesignHeight="300" d:DesignWidth="400">



    <StackPanel x:Name="LayoutRoot" Background="White">

        <Button x:Name="btn" Width="100" Height="30" Margin="50" Content="Post" Click="btn_Click"></Button>

    </StackPanel>

</UserControl>

cs:

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Net;

using System.Threading;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

//  by  rhythmk

namespace RhythmkSilverlightApp.Primary

{

    public partial class SimplifyPost : UserControl

    {

        private SynchronizationContext currentContext;



        public SimplifyPost()

        {

            InitializeComponent();

            this.currentContext = SynchronizationContext.Current;

        }



        private void btn_Click(object sender, RoutedEventArgs e)

        {

            HttpClientPost post = new HttpClientPost();

            post.PostData("http://localhost:13936/GetData.aspx", "id=cnblogs.com/rhythmk", currentContext, new SendOrPostCallback(ShowResult));

        }



        public void ShowResult(object obj)

        {

            MessageBox.Show("回传数据：" + obj.ToString());

        }

    }



    public class HttpClientPost

    {

        private string postData;

        SynchronizationContext currentContext;



        SendOrPostCallback sopc;



        public void PostData(string url, string data, SynchronizationContext _currentContext, SendOrPostCallback _sopc)

        {

            currentContext = _currentContext;

            Uri endpoint = new Uri(url);

            sopc = _sopc;

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(endpoint);

            request.Method = "POST";

            request.ContentType = "application/x-www-form-urlencoded";

            postData = data;

            request.BeginGetRequestStream(new AsyncCallback(RequestReadySocket), request);

        }



        private void RequestReadySocket(IAsyncResult asyncResult)

        {

            WebRequest request = asyncResult.AsyncState as WebRequest;

            Stream requestStream = request.EndGetRequestStream(asyncResult);



            using (StreamWriter writer = new StreamWriter(requestStream))

            {

                writer.Write(postData);

                writer.Flush();

            }



            request.BeginGetResponse(new AsyncCallback(ResponseReadySocket), request);

        }



        private void ResponseReadySocket(IAsyncResult asyncResult)

        {

            WebRequest request = asyncResult.AsyncState as WebRequest;

            WebResponse response = request.EndGetResponse(asyncResult);

            using (Stream responseStream = response.GetResponseStream())

            {

                StreamReader reader = new StreamReader(responseStream);

                string paramStr = reader.ReadToEnd();

                currentContext.Post(sopc, paramStr);

            }

        }

    }

}