topic SpatialReference null after moving polygon using the EditGeometry class in ArcGIS Runtime SDK for WPF (Retired) Questions

SpatialReference null after moving polygon using the EditGeometry class

KathrinWuensch — Tue, 18 Feb 2014 12:04:40 GMT

Hi,

I followed the "Edit Tools - Geometry" to implement editing of my shapes on the map. Everything is working nicely, until I realised that after the GeometryMoved action of a polygon the GeometryEditEventArgs property Geometry.SpatialReference is null. As I need to calculate the area of the moved and previously reshaped polygon, the missing Spatial Reference is a problem (I am using the AreasAndLengths operation).

I am using ArcGIS Runtime for WPF 10.2.

Currently I reset the spatial reference in the code, but was wondering is this is wanted behaviour or if I implement something wrong?

Thanks,
Kathrin

Re: SpatialReference null after moving polygon using the EditGeometry class

JoshuaTharp — Wed, 13 Aug 2014 16:12:50 GMT

Did you figure out what was going on? I seem to have the same problem:

Geometry has a spatial reference before the edit.

Geometry does not have a spatial reference after the edit.

Re: SpatialReference null after moving polygon using the EditGeometry class

JenniferNery — Thu, 16 Oct 2014 01:06:42 GMT

Hi,

Thank you for reporting this bug.If you had tried to move the geometry using EditGeometry, Editor, or EditorWidget, there is currently a bug that SpatialReference becomes null if geometry was Polyline/Polygon after this operation. We will try to include the fix in future versions.

In the meantime, you can subscribe to EditGeometry.GeometryEdit and correct the geometry

SpatialReference spatialReference;

private void EditGeometry_GeometryEdit(object sender, EditGeometry.GeometryEditEventArgs e)

{

if (e.Action == EditGeometry.Action.GeometryMoved)

{

// this should not happen

if (e.Geometry.SpatialReference == null)

{

if (spatialReference == null && e.Graphic.Geometry.SpatialReference != null)

spatialReference = e.Graphic.Geometry.SpatialReference;

}

if (e.Action == EditGeometry.Action.EditCompleted)

{

// this is just a workaround

if(e.Graphic.Geometry.SpatialReference == null && spatialReference != null)

e.Graphic.Geometry.SpatialReference = spatialReference;

}