public class Post
{
    public int Id { get; set; }

    public string Title { get; set; }

    public string Author { get; set; }
}

public class BlogService : WebService
{
    [WebMethod]
    public Post[] GetPosts()
    {
        List<Post> posts = new List<Post>()
        {
            new Post{ Id=1, Title="一步一步学Silverlight 2系列（13）：数据与通信之WebRequest", Author="TerryLee" },
            new Post{ Id=2, Title="一步一步学Silverlight 2系列（12）：数据与通信之WebClient", Author="TerryLee" },
            new Post{ Id=3, Title="一步一步学Silverlight 2系列（11）：数据绑定", Author="TerryLee" },
            new Post{ Id=4, Title="一步一步学Silverlight 2系列（10）：使用用户控件", Author="TerryLee" },
            new Post{ Id=5, Title="一步一步学Silverlight 2系列（9）：使用控件模板", Author="TerryLee" },
            new Post{ Id=6, Title="一步一步学Silverlight 2系列（8）：使用样式封装控件观感", Author="TerryLee" }
        };

        return posts.ToArray();
    }
}

<Grid Background="#46461F">
    <Grid.RowDefinitions>
        <RowDefinition Height="40"></RowDefinition>
        <RowDefinition Height="*"></RowDefinition>
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition></ColumnDefinition>
    </Grid.ColumnDefinitions>
    <Border Grid.Row="0" Grid.Column="0" CornerRadius="15"
        Width="240" Height="36" Background="Orange"
        Margin="20 0 0 0" Horiz>
        <TextBlock Text="最新随笔" Foreground="White"
              Horiz VerticalAlignment="Center"
              Margin="20 0 0 0"></TextBlock>
    </Border>
    <ListBox x:Name="Posts" Grid.Row="1" Margin="40 10 10 10">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="{Binding Id}" Height="40" Foreground="Red"></TextBlock>
                    <TextBlock Text="{Binding Title}" Height="40"></TextBlock>
                    <TextBlock Text="{Binding Author}" Height="40" Foreground="Orange"></TextBlock>
                </StackPanel>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>
</Grid>

public partial class Page : UserControl
{
    public Page()
    {
        InitializeComponent();
    }

    private void UserControl_Loaded(object sender, RoutedEventArgs e)
    {
        BlogServiceSoapClient client = new BlogServiceSoapClient();
        client.GetPostsCompleted += new EventHandler<GetPostsCompletedEventArgs>(client_GetPostsCompleted);
        client.GetPostsAsync();
    }

    void client_GetPostsCompleted(object sender, GetPostsCompletedEventArgs e)
    {
        if (e.Error == null)
        {
            Posts.ItemsSource = e.Result;
        }
    }
}