BPASmartClient/WPFDemo/Window2.xaml

<Window x:Class="WPFDemo.Window2"
        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"
        xmlns:local="clr-namespace:WPFDemo"
        mc:Ignorable="d"
        Title="Window2" Height="450" Width="800">
    <Canvas>
        <Canvas.Background>
            <ImageBrush ImageSource="/bj.png"/>
        </Canvas.Background>

        <local:TheListBox Canvas.Left="180" Canvas.Top="100"  HorizontalAlignment="Right" Grid.Row="1"></local:TheListBox>
        <Button Width="100" Height="30" Click="Button_Click"/>
    </Canvas>
</Window>