WPF阴影效果(DropShadowEffect)

        <TextBlock Text="阴影效果" FontSize="32">
            <TextBlock.Effect>
                <DropShadowEffect Color="Black"></DropShadowEffect>
            </TextBlock.Effect>
        </TextBlock>

        <TextBlock Text="阴影效果" FontSize="32" Canvas.Top="50">
            <TextBlock.Effect>
                <DropShadowEffect Color="Black" BlurRadius="10"></DropShadowEffect>
            </TextBlock.Effect>
        </TextBlock>