<Window x:Class="Workspace.DockExample" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Workspace" Width="640" Height="480"> <StackPanel Orientation="Horizontal"> <Canvas Width="250" Height="250"> <Rectangle Height="50" Width="50" Fill="Red" Stroke="Blue" StrokeThickness="2" Canvas.Left="100" Canvas.Top="100"> <Rectangle.RenderTransform> <TranslateTransform x:Name="AnimatedTranslateTransform" X="0" Y="0" /> </Rectangle.RenderTransform> </Rectangle> </Canvas> <Button Name="startButton" Margin="0,0,2,0">Start</Button> <Button Name="stopButton">Stop</Button> <StackPanel.Triggers> <EventTrigger SourceName="startButton" RoutedEvent="Button.Click"> <BeginStoryboard Name="myBeginStoryboard"> <Storyboard> <DoubleAnimation Storyboard.TargetName="AnimatedTranslateTransform" Storyboard.TargetProperty="X" From="-50" To="50" Duration="0:0:2" /> <DoubleAnimation Storyboard.TargetName="AnimatedTranslateTransform" Storyboard.TargetProperty="Y" From="-50" To="50" Duration="0:0:2" /> </Storyboard> </BeginStoryboard> </EventTrigger> <EventTrigger SourceName="stopButton" RoutedEvent="Button.Click"> <StopStoryboard BeginStoryboardName="myBeginStoryboard" /> </EventTrigger> </StackPanel.Triggers> </StackPanel> </Window>