<Window x:Class="Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <Window.Resources> <ImageBrush ImageSource="c:\image.jpg" x:Key="brSmile" /> </Window.Resources> <Grid Background="{StaticResource brSmile}"> </Grid> </Window>