關于sliverlight4 打印功能

<UserControl x:Class="PrintPage.MainPage"
    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">

    <Grid x:Name="LayoutRoot" Background="White">
        <Grid.RowDefinitions>
            <RowDefinition Height="262*"/>
            <RowDefinition Height="38*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <ScrollViewer Margin="4,4.135,4,4" HorizontalScrollBarVisibility="Auto"
            VerticalScrollBarVisibility="Auto">
            <Image x:Name="imgOne" Source="image/09r.jpg"
                   Height="500" Width="500"/>
        </ScrollViewer>
        <Button x:Name="Print" Content="Print" Margin="4,5,4,0"
                Click="Print_Click" Grid.Row="1"/>
    </Grid>
</UserControl>

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;
using System.Windows.Printing;

namespace PrintPage
{
    publicpartialclass MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        privatevoid Print_Click(object sender, RoutedEventArgs e)
        {
            var pdoc =new PrintDocument();
            pdoc.PrintPage += (p, args) =>
            {
                args.PageVisual = imgOne;
                args.HasMorePages =false;

            };

            pdoc.EndPrint += (p, args) =>
            {
                MessageBox.Show("打印完畢");
            };

            pdoc.Print("打印改頁面");    
        }
    }
}