WPF 动态切换按钮图片

很简单，就直接上代码了

<Button Name="zoomout" Tag="zoomout" ToolTip="放大">
    <Button.Template>
        <ControlTemplate TargetType="{x:Type Button}">
            <Border>
                <Image Name="img" Source="/ModulusFE.StockChartX;component/Images/zoomOut.png"/>
            </Border>
            <ControlTemplate.Triggers>
                <Trigger Property="IsEnabled" Value="False">
                    <Setter TargetName="img" Property="Source" Value="/ModulusFE.StockChartX;component/Images/zoomOutGrey.png">
                    </Setter>
                </Trigger>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter TargetName="img" Property="Source" Value="/ModulusFE.StockChartX;component/Images/zoomOutHover.png">
                    </Setter>
                </Trigger>
            </ControlTemplate.Triggers>
        </ControlTemplate>
   </Button.Template>
</Button>