search with reprojection

Permanently deleted user

21 Juni 2011 15:09

Hi All,

I've created a "Search Locality" workflow based on the "searchParcelsID.xaml" sample. 

However, my search layer is in a different coordinate system (4283), then the map (102100), and the returned "FeatureSet" are not being reprojected-on-fly.

I've noticed that in the "QueryTask", there is an option to set the "Out Spatial Reference", but I cannot get that to work.

Has anybody been able to create a search workflow with reprojection?? 

Regards,

Yi Lik

 

 

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  Permanently deleted user

  24 Juni 2011 01:18

  Is there a spatialReference variable in that workflow?  If so, set the default attribute of that to your coordinate system...

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  Permanently deleted user

  24 Juni 2011 04:50

  You can create a new spatial reference object, which takes either a well-known ID or well-known text.

  new ESRI.ArcGIS.Client.Geometry.SpatialReference(102100)

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  Permanently deleted user

  29 Juni 2011 14:03

  It wasn't working because my "Return Geometry" was set to False , once I set it to True .  It is projecting.

  Instead of hard coding the coordinate system into the workflow, is there a way for the workflow to work out the SilverLight Viewer projection? 

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  Permanently deleted user

  30 Juni 2011 06:43

  Yes, if you have a geometry from the map already, you can ask it for its spatial reference. So in the Out Spatial Reference box, you would put (assuming your variable is named 'geometry'):

  geometry.SpatialReference

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  Permanently deleted user

  05 Juli 2011 15:25

  So how do I get a geometry from the map, and pass that into the workflow?

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  Permanently deleted user

  07 Juli 2011 02:23

  If you have a featureset being returned you have everything you need. Ask for the spatial reference of the geometry for the first feature in the featureset. Assuming you have a featureset variable called 'featureSet' you can access it like this:

  featureSet.Features.first().Geometry.SpatialReference

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