using GeoJSON.Net.Geometry;
using Microsoft.SqlServer.Types;
using GeoJSON.Net.Contrib.MsSqlSpatial;

// SqlGeometry sample point
SqlGeometry simplePoint = SqlGeometry.Point(1, 47, 4326);

// SqlGeometry -> GeoJSON example
Point point = simplePoint.ToGeoJSONObject<Point>();

// GeoJSON -> SqlGeometry example
SqlGeometry sqlPoint = point.ToSqlGeometry(4326);