topic Re: Controlling layer visibility of a map service from code in ArcGIS API for Silverlight Questions

Controlling layer visibility of a map service from code

PaulHuppé — Fri, 10 Jun 2011 12:12:35 GMT

Hi,

I am trying to control the layer visibility of a map service in code behind. I thought this would be simple, but I am having a hard time getting this done. I can get a hold of the service from my Map Control, called map, using map.Layers[0] for example. This contains an array of LayerInfo. If I loop on this array, for any of the LayerInfo, there is no settable visibility property. The LayerInfo only has a DefaultVisibility property which is a boolean indicating the layer's default visibility. I also tried looking in the MapLegend control without success. Is there an easy way to do this that I have not found yet?

Thanks,
Paul

Re: Controlling layer visibility of a map service from code

TerryGiles — Sat, 11 Dec 2021 11:51:51 GMT

Assuming the layer you're after is of type ArcGISDynamicMapServiceLayer, use the VisibleLayers property to control which sublayers are displayed. It's an array of Int so just add/remove the sublayer index from that.

 int[] myVisibleLayers = { 1, 2, 4 };  //sublayers 0 & 3 will not display 
 myArcGISDynamicMapServiceLayer.VisibleLayers = myVisibleLayers;

Re: Controlling layer visibility of a map service from code

PaulHuppé — Fri, 10 Jun 2011 13:31:29 GMT

Thanks Terry, this is what I was looking for.
Paul