topic Re: Deleting a feature from a ShapefileFeatureTable only marks the record for deletion in .dbf file in .NET Maps SDK Questions

Deleting a feature from a ShapefileFeatureTable only marks the record for deletion in .dbf file

zjoerg — Wed, 28 Apr 2021 13:00:23 GMT

It seems that the following code does not delete the record in the .dbf file. Instead it is only marked for deletion:

await shapefileFeatureTable.DeleteFeatureAsync(feature);
shapefileFeatureTable.Close();

If you load the shapefile in ArcMap afterwards you'll get this warning message:
There was a problem drawing the shapefile. Drawing aborted.
If you look into the table you will still see the feature which was deleted in the ArcGIS Runtime app (there it isn't displayed anymore). I think what is missing is a kind of pack function call for the .dbf file during the closing of the ShapefileFeatureTable.

I found this behaviour in Version 100.9 (WPF) but I think it might have existed in the versions before. I also tested it in Version 100.11 (WPF) with the same result.

Re: Deleting a feature from a ShapefileFeatureTable only marks the record for deletion in .dbf file

DanPatterson — Wed, 28 Apr 2021 15:05:46 GMT

Deleting records from a shapefile table will cause errors, you have to delete the feature itself, then the record will be deleted from the table. This can be confirmed by trying it manually in either arcmap or arcgis pro

Re: Deleting a feature from a ShapefileFeatureTable only marks the record for deletion in .dbf file

zjoerg — Wed, 28 Apr 2021 15:20:47 GMT

Thanks for your quick response.
Perhaps I'm missing something but I think in the ArcGIS Runtime SDK you can only delete a feature via its feature table. At least I did not find a Delete method or something like that on the class 'Feature'.

Re: Deleting a feature from a ShapefileFeatureTable only marks the record for deletion in .dbf file

TonyWakim — Mon, 03 May 2021 18:00:47 GMT

Does Runtime have any issues with the deleted feature, or does it seem to work as expected?

Re: Deleting a feature from a ShapefileFeatureTable only marks the record for deletion in .dbf file

zjoerg — Tue, 04 May 2021 08:11:27 GMT

In my ArcGIS Runtime app the shapefile works as expected even after deleting a feature.

I'm already in touch with the ESRI support about this case and they digged up a bug report for the ArcGIS Runtime Android SDK: BUG-000117942

It's very likely that I stumbled across the same issue in the ArcGIS Runtime SDK for .NET.

Re: Deleting a feature from a ShapefileFeatureTable only marks the record for deletion in .dbf file

TonyWakim — Thu, 06 May 2021 01:29:37 GMT

Thanks for the info @zjoerg. I was able to reproduce with ArcGIS Runtime .Net 100.11 as well. It does seem to be the same issue identified in the the ArcGIS Runtime Android SDK: BUG-000117942.