XAML:获取父背景 [英] XAML: Get parent background

问题描述

我需要在 XAML 中将控件的背景设置为父级背景的颜色.为什么不简单地使背景透明?这是一个带有阴影的按钮，所以我需要设置背景；否则，阴影会显示出来.

I need to set a control's background to the color of the parent's background in XAML. Why not simply make the background transparent? It's a button with a drop shadow, so I need to set the background; otherwise, the drop shadow shows through.

那么，从我的控件标记来看，我如何将 Background 属性设置为与父(主机)背景相同?感谢您的帮助.

So, from my control's markup, how do I set the Background property equal to whatever the parent (host) Background is? Thanks for your help.

推荐答案

您应该能够使用以下方法设置绑定:

You should be able to set the binding using:

<Button Background="{Binding Path=Background, RelativeSource={RelativeSource Mode="FindAncestor" AncestorType="{x:Type Control}" AncestorLevel="1"}}" />

因为背景是为任何控件"定义的，所以这应该抓取树上一个祖先的控件，并使用它的背景.

Since Background is defined for any "Control", this should grab the control one ancestor up the tree, and use it's background.

另一个需要考虑的选择是制作一个按钮样式，将背景显示为透明，但实际上仍然绘制阴影/边框.这将允许它在任何 UIElement 上工作.

Another option to consider would be to just make a button style that shows the background as transparent, but actually still draws the drop shadow/border. This would allow it to work on any UIElement.

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