Lets take this example. I have 3 GraphicOverlays
- Overlay 1 contains a filled polygon
- Overlay 2 contains a polyline
- Overlay 3 contains a number of points
The polygon has a ZIndex of 10
the polyline and the points have ZIndexs of 20
Should it always draw the polyline and the points on top of the filled polygon?
Zindex only applies within an overlay. You'd need to order your overlays so the polygon overlay is at the bottom.
So, it appears that the "bottom" of the list is the last item added to the overlay list, is that correct?
"Bottom" is the first item added, ie index 0, similar to how XAML in general composes visual elements as well.