GeometryEngine.BufferGeodetic with negative distance returns always an exception

CarstenSchumacher

Hello community, i hope you can help me.

I'm using arcgis runtime for .net (100.11.2). I have a simple polygon graphic (created from sketcheditor) and want to create a buffer inside the polygon.

When i use GeometryEngine.BufferGeodetic with a positive distance i get a new geometry with the buffer.

When i use GeometryEngine.BufferGeodetic with a negative distance i get always an exception with the message "distance". The API describes the possibility to use a negative value as distance.

My geometry has a spatial reference of WGS84 (Wkid: 4326). 

Does anyone know what the problem is? Thanks in advance.

CarstenSchumacher

Thanks Michael, actually its not possible to update to 100.13 or later. But i found another solution. I used the GeometryEngine.BufferGeodetic(Geometry, double, LinearUnit?, ...) method for creating a negative buffer but always not successfull. There is another method for creating a geodetic buffer --> GeometryEngine.BufferGeodetic(IEnumerable<Geometry>, IEnumerable<double>, LinearUnits?, ...). These method works with a negative distance. Thats my actual workaround.