
Hi,
What I basically want to do is set the interior rings property of a polygon to be equal to the exterior rings of another polygon. Any idea as to how I would go about this? I can't seem to get the exterior rings from a vector layer as a LinearRing no matter
what I try!
Thanks,
Dylan



Persevere and you'll figure it out. I should remember that! Anyway, I managed to get something that works 
SharpMap.Data.Providers.GeometryProvider inside = new SharpMap.Data.Providers.GeometryProvider(
area.DataSource.GetGeometriesInView(map.Envelope));
foreach (SharpMap.Geometries.MultiPolygon multi in inside.Geometries)
{
foreach (SharpMap.Geometries.Polygon poly in multi)
{
mask.InteriorRings.Add(poly.ExteriorRing);
}
}
Where "area" is the vector layer I needed to get the data from, "map" is the map I am working with, and "mask" is the polygon I was adding the interior rings to.

