A z-order of 0 is equivalent to the bottom. A z-order equal to
the number of child elements (minus 1) is equivalent to the top (relative
to its parent.)
var selElementsZOrder = graphicsLayer.GetSelectedElements();
//list out the z order
foreach (var elem in selElementsZOrder)
System.Diagnostics.Debug.WriteLine($"{elem.Name}: z-order {elem.ZOrder}");
var selElementsZOrder = layout.GetSelectedElements();
//list out the z order
foreach (var elem in selElementsZOrder)
//At 2.x - System.Diagnostics.Debug.WriteLine($"{elem.Name}: z-order {elem.GetZOrder()}");
System.Diagnostics.Debug.WriteLine($"{elem.Name}: z-order {elem.ZOrder}");