reactive/Rx.NET/Test/Rx/SilverlightApp5/MainPage.xaml

<UserControl x:Class="SilverlightApp5.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">
        <Button x:Name="button1" Content="Run tests" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="75" Click="button1_Click"/>
        <TextBox x:Name="textBox1" HorizontalAlignment="Left" Height="23" Margin="99,10,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120"/>
        <TextBlock x:Name="label1" Text="(Results)" HorizontalAlignment="Left" Margin="10,45,0,0" VerticalAlignment="Top"/>
    </Grid>
</UserControl>