UI Controls 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'>
              Background="White"
          KeyDown="LayoutRoot_KeyDown">
        
            
        

        
            
            
        

                           Grid.Column="0"
                   Grid.Row="0"
                   FontSize="10"/>
                            Grid.Column="0"
                    Grid.Row="1">
            
                                         Height="20"
                         Width="200" 
                         KeyDown="myTextBox_KeyDown" />
            
        
    

//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 myTextBox_KeyDown(object sender, KeyEventArgs e)
        {
            tbOutput.Text += "\n\nTextBox handled; sender is "
                        + sender.ToString() + ", \nsource is "
                        + e.OriginalSource.ToString() + "\n\n";
        }
        private void LayoutRoot_KeyDown(object sender, KeyEventArgs e)
        {
            tbOutput.Text += "Grid handled; sender is "
                        + sender.ToString() + ", \nsource is "
                        + e.OriginalSource.ToString();
        }
    }
}