RotateTransform ImageBrush.RelativeTransform
<Window x:Class="BrushTransformExample" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Brush Transforms" Height="475" Width="510"> <Grid> <Rectangle Width="120" Height="60" Margin="5" Grid.Column="2" Grid.Row="3"> <Rectangle.Fill> <ImageBrush ImageSource="c:\image.jpg"> <ImageBrush.RelativeTransform> <RotateTransform CenterX="0.5" CenterY="0.5" Angle="45" /> </ImageBrush.RelativeTransform> </ImageBrush> </Rectangle.Fill> </Rectangle> </Grid> </Window>