Set BlurBitmapEffect for Button
<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF" Height="300" Width="300"> <UniformGrid Columns="3" Rows="4"> <Button Content="A Button" FontSize="16" Margin="5" MaxHeight="30"/> <Button Content="A Button" FontSize="16" Margin="5" MaxHeight="30"> <Button.BitmapEffect> <BlurBitmapEffect Radius="1" /> </Button.BitmapEffect> </Button> <Button Content="A Button" FontSize="16" Margin="5" MaxHeight="30"> <Button.BitmapEffect> <BlurBitmapEffect Radius="2" /> </Button.BitmapEffect> </Button> </UniformGrid> </Window>