[mapguide-users] BaseLayerGroup - rendering and visibility

[Kenneth Skovhede, GEOGRAF A/S]

I think you have an incorrect notion of what BaseLayers are.

The idea of a BaseLayer group, is to generate an image square,
either on-request or pre-generated.

If you consider that your group is a static image,
that is stored on the server, there is no way it
can behave like a "regular" layer. You can turn groups
on and off (because a group is an image layer).

If you need the layer to switch on/off you need to use a
regular layer. You can combine regular and BaseLayers.

The BaseLayer tiles are generated from the MapDefinition,
not the runtime map, so you have to change that one.
If you save the MapDefinition, all tiles will be deleted, and you
loose all performance benefits.

The BaseLayers work as regular layers with respect to selection.

Regards, Kenneth Skovhede, GEOGRAF A/S



djonio skrev:
> Hi,
>
> MGOS 2.0.2 
> Windows XP Sp2 
> .NET 
> Ajax
>
> Ok ... I get it. They do not behave like "regular" groups and layers.
>
> Does anyone know what/how has to happen within .NET codebehind to make
> “BaseLayerGroups” behave more/less like regular layers? 
>
> What does the ajaxviewer do within the UI that has to be triggered within/by
> codebehind?
>
> Must I remove then re-add? Is this possible? 
>
> I have read, what I believe to be, all relavant posts and short of just NOT
> using them a real solution eludes me.
>
> r,
> dennis
>
>