C# WPF 背景图模糊问题

Question

    <Border BorderBrush="Transparent" BorderThickness="1" CornerRadius="6" Margin="10,10,10,20">
    <Border.Effect>
        <DropShadowEffect ShadowDepth="10" Opacity="0.2"/>
    </Border.Effect>
    <Border.Background>
        <ImageBrush ImageSource="E:\projects\hcgd_client\hcgd_client\resources\bj.png"/>
    </Border.Background>

上图是应该的效果，但是程序跑起来后是如下效果

Answer 1

参考：http://www.cnblogs.com/xiaokang088/p/3200431.html