topic Group layer: sub-layer visibility in ArcGIS API for Silverlight Questions

Group layer: sub-layer visibility

JamesMolohon — Fri, 23 Apr 2010 18:59:28 GMT

Hello,
I'm trying to set the visibility of a sub layer of an ArcGISDynamicMapServiceLayer by removing the index of the layer from the VisibleLayers array. I'm able to get this to work for layers that are not part of a group. Is this possible? Can anyone share an example?

Regards,
James

Setting the sub layer visibility?

JamesMolohon — Wed, 28 Apr 2010 12:26:03 GMT

For example, I have a dynamic map service that has layers like this:
Layers:

Background (0)

Roads Overview (1)

Airport (2)

Parks (3)

Buildings (4)

Roads (5)

I would like to hide the Airport layer, so I removed 2 from the VisibleLayers array, but it is still visible.

Group layer: sub-layer visibility

DominiqueBroux — Wed, 28 Apr 2010 14:17:45 GMT

It should work the same way when a sublayer is part of a group.

Look with Fiddler or Firebug what the url to get the image is. You should see a layers parameter with the list of visible layers.

/Dominique

Re: Group layer: sub-layer visibility

BedaKuster — Thu, 20 May 2010 13:36:17 GMT

The REST interface uses an other "Visibility Management" as the SOAP Interface.

If you set the Visibility of a grouplayer to visibile (add the id to the list) all sublayers will be visible. To hide one sublayer, remove the grouplayer id and add each visible sublayer id.

Background (0)
[INDENT]VisibleLayer(1)[/INDENT]
[INDENT]VisibleLayer(2)[/INDENT]
[INDENT]InvisibleLayer(3)[/INDENT]

If id 0 is in the VisibleLayers array, all sublayers are visible. So remove id 0 and add 1 and 2.

Hope this helps

Re: Group layer: sub-layer visibility

DrewDowling — Thu, 07 Apr 2011 16:21:58 GMT

Thanks you this was killing me. I couldn't figure out why sublayers that were not on by default kept appearing when I toggled a group layer. I found no documentation about this and it is different than how ArcMap works.