<Window.Resources>
        
        <XmlDataProvider x:Key="DataProvider" XPath="/root">
            <x:XData>
                <root xmlns="">
                    <Img>C:\TEMP\Images\1.jpg</Img>
                    <Img>C:\TEMP\Images\2.jpg</Img>
                    <Img>C:\TEMP\Images\3.jpg</Img>
                    <Img>C:\TEMP\Images\4.jpg</Img>
                </root>
            </x:XData>
        </XmlDataProvider>

        <Style TargetType="{x:Type ListBox}" x:Key="ItemTemplate">
            <Setter Property="Foreground" Value="White" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ListBox}" >
                        <WrapPanel Margin="5" 
                                   IsItemsHost="True" 
                                   Orientation="Horizontal"
                                   ItemWidth="150" 
                                   VerticalAlignment="Top"
                                   HorizontalAlignment="Stretch">
                        </WrapPanel>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>

    <Grid>
        <ListBox Style="{StaticResource ItemTemplate}" ItemsSource="{Binding Source={StaticResource DataProvider}, XPath=Img}">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Border CornerRadius="6" Padding="3" Background="LightBlue" HorizontalAlignment="Left" VerticalAlignment="Top">
                        <Image Source="{Binding Path=InnerText}"/>
                    </Border>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </Grid>