Communication Silverlight

    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:DesignWidth='640' 
    d:DesignHeight='480'>
    
        
             
        
        
    

//File:Page.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Net;
namespace SilverlightApplication3
{
    public partial class MainPage : UserControl{
        public MainPage(){
            InitializeComponent();
            downloadBtn.Click += new RoutedEventHandler(doGetContent);
         }
        void doGetContent(object sender, RoutedEventArgs e){
            string filename = "readme.txt";
            WebClient client = new WebClient();
            client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(doDownloadCompleted);
            client.DownloadStringAsync(new Uri(filename, UriKind.Relative));
         }
        void doDownloadCompleted(object sender,
                                 DownloadStringCompletedEventArgs e)
         {
            downloadText.Text = e.Result;
         }
     }
}