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....data Iterate through layer features Read layer features by index...about vector layers Write vector data Create new layers and datasets...