<Window x:Class="BitmapEffects.Window4" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Bitmap Effects" Height="538" Width="600" > <StackPanel> <Ellipse Height="100" Width="100" Fill="Red" Stroke="Black"> <Ellipse.BitmapEffect> <BlurBitmapEffect Radius="{Binding Path=Value, ElementName=sliderBlur}" /> </Ellipse.BitmapEffect> </Ellipse> <TextBlock>Blur</TextBlock> <Slider Minimum="0" Maximum="10" Name="sliderBlur" Value="14"/> <TextBox Text="{Binding ElementName=sliderBlur, Path=Value}"/> </StackPanel> </Window>