Use Slider to Control Label
<Window x:Class="Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="UseSlider" Height="300" Width="300"> <Canvas> <Slider Name="sliEllipseWidth" Margin="20,0,0,0" Width="100" Height="20" HorizontalAlignment="Left" VerticalAlignment="Top" TickPlacement="BottomRight" TickFrequency="10" Orientation="Horizontal" Value="50" Minimum="10" Maximum="150" LargeChange="10" SmallChange="1" IsSnapToTickEnabled="True" /> <Slider Name="sliEllipseHeight" Margin="0,20,0,0" Width="20" Height="100" HorizontalAlignment="Left" VerticalAlignment="Top" TickPlacement="BottomRight" TickFrequency="10" Orientation="Vertical" Value="20" Minimum="10" Maximum="150" FlowDirection="LeftToRight" VerticalContentAlignment="Top" LargeChange="10" SmallChange="1" /> <Label Canvas.Left="134" Canvas.Top="1" Height="29" Name="lblWidth" Width="42" Content="{Binding ElementName=sliEllipseWidth,Path=Value}" /> <Label Canvas.Left="0" Canvas.Top="136" Height="29" Name="lblHeight" Width="61" Content="{Binding ElementName=sliEllipseHeight,Path=Value}" /> </Canvas> </Window>