I am successfully now doing Intersections to find features - and then coloring the feature using this:
HighlightLayer = new SharpMap.Layers.VectorLayer("HighlightLayer");
HighlightLayer.DataSource = new SharpMap.Data.Providers.GeometryProvider(rowSelected.Geometry);
HighlightLayer.Style.Outline = System.Drawing.Pens.Green;
HighlightLayer.Style.EnableOutline = true;
HighlightLayer.Style.Fill = new System.Drawing.SolidBrush(Color.Green);
If the rowSelected is a Polygon, I successfully paint and fill the polygon green.
If the rowSelected is a Poly Line, the Line does not get colored.
What else do I need to do in the case of a Poly Line Shape? Thank you.