为什么我不能从一个元素中找到ZIndex作为属性？ [英] Why can't I find ZIndex as a property from an element?

问题描述

使用ChangeProperty行为，我可以从元素的相应面板更改每个属性，但是我无法访问属性ZIndex。为什么会这样，并且有一种解决方法可以在选择元素时更改元素的ZIndex？ 

解决方案

我相信ZIndex是一个附加属性，所以它仅当您在Canvas中包含元素或附加该属性的另一个容器时才存在。

我认为您需要执行以下操作：

Canvas.SetZIndex（controlReference， newZIndexValue）;

这是关于如何设置附加属性，而不是具体zindex：
http://cornucopia30.blogspot.com/2006/12/wpf-how-to-programmatically-work-with.html

关于Canvas.ZIndex附加属性的文档：
http://msdn.microsoft.com/en-us/library/system.windows.controls.canvas.zindex（VS.95）的.aspx

-David

With the ChangeProperty behavior I can change every property from the corresponding panel of an element, but I can't access the property ZIndex. Why is that, and is there a workaround to change the ZIndex of an element when it's selected? 

解决方案

I believe that ZIndex is an attached property, so it only exists when you contain an element inside a Canvas or another container that attaches that property.

I think you need to do something like this:

Canvas.SetZIndex(controlReference, newZIndexValue);

This is about how to set attached properties, not specifically zindex:
http://cornucopia30.blogspot.com/2006/12/wpf-how-to-programmatically-work-with.html

Documentation on the Canvas.ZIndex attached property:
http://msdn.microsoft.com/en-us/library/system.windows.controls.canvas.zindex(VS.95).aspx

-David

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