topic Re: spatial query in ArcGIS API for Silverlight Questions

spatial query

YassineEL_JADIDI — Tue, 08 May 2012 16:31:04 GMT

hello,
i want to create a spatial query with differents layers
for example : i want to have cities (points) in a region (polygon).
i hope that anyone have an idea about that.
thank you !

Re: spatial query

JenniferNery — Tue, 08 May 2012 16:53:32 GMT

You can use FeatureLayer and Editor Select command. http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#FeatureLayerSelection. If you open up Fiddler, you will see that it performs a query based on the selection box. You can change Editor.SelectionMode to Polygon instead of Rectangle. This is similar to doing this sample: http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#SpatialQuery except you can add more FeatureLayer in your Map and Editor.Select will perform the spatial query for you.

Re: spatial query

YassineEL_JADIDI — Wed, 09 May 2012 08:49:03 GMT

i tried to apply the example in : http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#FeatureLayerSelection, but it wont work...i had a problem in

<StackPanel  x:Name="EditorToolStrip" Margin="0,5,5,0" DataContext="{StaticResource editor}">

, they told me that the ressource "MyEditor" couldt not be resolved.

Re: spatial query

DominiqueBroux — Wed, 09 May 2012 09:44:57 GMT

i want to create a spatial query with differents layers
for example : i want to have cities (points) in a region (polygon).

The spatial query task is working with one layer only.
So if you need to create one query by layer.

You can also consider working with Identity or Find tasks thatt are working on one service (i.e possible multiple layers).
Samples here : http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#Identify or http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#Find