画布孩子在背景中

Question

I want to put a Canvas child to background.

For example: I have an Ellipse (child of canvas). When I add a rectangle on same coordinates I want to put it under ellipse.

How can I do this?

Answer 1

You can use the ZIndex Attached property of the Canvas (Panel) :

<Canvas>
    <Ellipse Canvas.ZIndex = "10" />
    <Rectangle Canvas.ZIndex = "5"/>
</Canvas>

Or you can reorder the child elements:

<Canvas>
    <Rectangle/>
    <Ellipse />
</Canvas>

In code:

Canvas.SetZIndex(newRectangle, 5);
Canvas.SetZIndex(oldEllipse, 10);