<Canvas Name="canvas1" Grid.Row="1" MouseWheel="canvas1_MouseWheel"  MouseDown="canvas1_MouseDown" MouseUp="canvas1_MouseUp"  MouseMove="canvas1_MouseMove"  Focusable="True">
            <Canvas.Background>
                <SolidColorBrush Color="Gray" />
            </Canvas.Background>
            <Line X2="100" Y2="100" Stroke="Black" StrokeThickness="4"/>
        </Canvas>