Data 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'>
    
        
            
        

        
            
            
        

                         Width="200"
                 Height="20"
                 Grid.Column="0"
                 Grid.Row="0" />
                        Width="100"
                Height="20"
                Grid.Column="0"
                Grid.Row="1"
                Content="Start Task" 
                Click="btnStartTask_Click" />
    

//File: Page.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
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;
namespace SilverlightApplication3
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }
        private void btnStartTask_Click(object sender, RoutedEventArgs e)
        {
            System.Threading.Thread.Sleep(2000);
        }
    }
}