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로또 소스  : 짧다..
 public class LottoClass
    {
        public static IEnumerable  Play(int gameCount = 1)
        {
            bool[] boxs = new bool[45];
            List<int> Item = new List<int>();
            Random rd = new Random();
            try
            {
                do
                {
                    int idx = rd.Next() % 45;
                    if (!boxs[idx])
                    {
                        boxs[idx] = true;
                        Item.Add(idx);
                    }
                }
                while (boxs.Count((a) => a == true) < 6);
                Item.Sort();
            }
            catch
            {
            }
            finally
            {
                rd = null;
                Array.Clear(boxs, 0, boxs.Length);
                boxs = null;
            }
            return from o in Item
                   select o+1;                  
        }
    }

메인.xaml ( 데모 소스에서 수정 )
<phone:PhoneApplicationPage
    x:Class="WindowsPhoneApplication1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="696"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    SupportedOrientations="Portrait" Orientation="Portrait"
    shell:SystemTray.IsVisible="True">

    <!--LayoutRoot is the root grid where all page content is placed-->
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>

        <!--TitlePanel contains the name of the application and page title-->
        <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
            <TextBlock x:Name="ApplicationTitle" Text="당첨기원~♥" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock x:Name="PageTitle" Text="로또추첨번호" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>          
        </StackPanel>
       
        <!--ContentPanel - place additional content here-->
        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
            <Grid.RowDefinitions>
                <RowDefinition Height="120"></RowDefinition>
                <RowDefinition></RowDefinition>
            </Grid.RowDefinitions>
            <Button Click="Button_Click" Grid.Row="0" Content="뽑기" Margin="2,0,-2,0"></Button>
            <ListBox Name="LottoContents"  Grid.Row="1" ItemsSource="{Binding}">
                    <TextBlock Text="{Binding Path=Name}"></TextBlock>
            </ListBox>
        </Grid>
    </Grid>
 
    <!--Sample code showing usage of ApplicationBar-->
    <phone:PhoneApplicationPage.ApplicationBar>
        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
            <shell:ApplicationBarIconButton IconUri="/Images/appbar_button1.png" Text="Button 1"/>
            <shell:ApplicationBarIconButton IconUri="/Images/appbar_button2.png" Text="Button 2"/>
            <shell:ApplicationBar.MenuItems>
                <shell:ApplicationBarMenuItem Text="MenuItem 1"/>
                <shell:ApplicationBarMenuItem Text="MenuItem 2"/>
            </shell:ApplicationBar.MenuItems>
        </shell:ApplicationBar>
    </phone:PhoneApplicationPage.ApplicationBar>

</phone:PhoneApplicationPage>

메인.xaml.cs
  public partial class MainPage : PhoneApplicationPage
    {
        // Constructor
        public MainPage()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            LottoContents.DataContext = LottoClass.Play(1);
        }
    }