GIS C#.NET Library or API supports formats Shapefile, GeoJSON, FileGDB, GML, KML, SVG, PostGis, Sql Server, GeoTIFF. It can read, write, convert and visualize vector data, manipulate Geometries, perform analysis and lookup spatial reference systems by SRID....create and analyze feature geometries, and render maps to SVG....Customize styling for each geometry type Combine several symbolizers...