This is one example how you can add a points collection to a polyline and draw the path onto GoogleMapControl project. The points are in string format in the SQL database so they are convertet to double datatype before added to the polyline path.
Drawing library is a included feature. Those overlays- Circle, Polygon, Rectangle, Polyline can be stored in the database
You can use Drawing Tools of Google Maps API included in the control. Drawing tools You can store those data using SQL Geometry type. Those overlays- Circle, Polygon, Rectangle, Polyline can be stored in the database. Visit this Page on stackoverflow.com if you want to know how to store Google overlays in the database. Drawing library is a included feature. …