SlidingImage.xaml

<UserControl
    x:Name="Root"
    x:Class="KenBurns.SlidingImage2"
    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">
    <UserControl.Resources>
        <Storyboard x:Key="SlidingStoryboard">
            <DoubleAnimationUsingKeyFrames
                Storyboard.TargetName="TranslateTransform"
                Storyboard.TargetProperty="Y"
                RepeatBehavior="Forever" />
        </Storyboard>
    </UserControl.Resources>
    
    <Canvas x:Name="Canvas">
        <Image
            x:Name="Image"
            Width="{Binding Path=ActualWidth, ElementName=Root}"
            Source="{Binding Path=Source, ElementName=Root}">
            <Image.RenderTransform>
                <TranslateTransform x:Name="TranslateTransform"></TranslateTransform>
            </Image.RenderTransform>
        </Image>
    </Canvas>
</UserControl>