topic Re: Error when using ExportToWKB on multipart geometry in ArcGIS Pro SDK Questions

Error when using ExportToWKB on multipart geometry

RadekMandovec — Mon, 24 Mar 2025 12:45:46 GMT

When I try use ExportToWKB:

var wkbGeom = GeometryEngine.Instance.ExportToWKB(WkbExportFlags.WkbExportPolygon, geometry);

I get following error:

System.Exception: 'COMException: An unspecified error has occurred.'

There is mentioned "Does not support curves" in the documentation, but nothing about multiparts. So is it supposed to work on multiparts or not? I tried to create very simple multipart polygon with two squares and it does not work on it either.

Re: Error when using ExportToWKB on multipart geometry

JoshuaBixby — Mon, 24 Mar 2025 14:16:49 GMT

Have you tried WkbExportMultiPolygon flag?

Re: Error when using ExportToWKB on multipart geometry

RadekMandovec — Mon, 24 Mar 2025 14:33:49 GMT

Of course I didn't:-) Now everything works fine! Thank you very much!