Paul den Dulk

> from a Listto a *priority collection of ILayers.* I still don't understand what you mean here. So, this is not a List? So what is it? Do you mean...

Another perspective. Some map components have layer 'groups'. This is basically what you want. Where the group is all that matters and the specific ordering within a group is ignored....

@charlenni I would prefer Order. Level is in Mapsui often used for the Level of a tile piramide and I associate Priority with time, like the first to arrive, while...

@charlenni In your PR the Level is set when creating a layer. Perhaps users also want to change the Level later on.

You could use both but it feels a bit awkward to combine them. You could insert a layer with Order 0 after a layer with Order 1 and then the...

I was now thinking of this. The ILayer itself has no ordering information. Only the LayerCollection has. Within the LayerCollection there is actual grouping for what we referred to as...

This is the interface for LayerCollection I now have in mind ```c# public interface ILayerCollection { void Clear(); // removes all layers void Clear(int group); // removes all layers in...

> Does ILayer has a Group property? No. Do you see a disadvantage? > MoveUp and MoveDown should have a flag, if a Group change is allowed. Makes sense. >...

We use the SKXamlCanvas (is that WPF?).

I was running Mapsui.Samples.Uno.WinUI.Windows on Windows, [this one](https://github.com/Mapsui/Mapsui/tree/main/Samples/Mapsui.Samples.Uno.WinUI/Mapsui.Samples.Uno.WinUI.Windows).