Showing all posts tagged: 'Polygon'

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Working with DbGeography, Points and Polygons in .NET

One very handy feature of the System.Data.Spatial namespace is the DbGeography class that allows you to work with either points on a "map" or shapes/polygons. To create a DbGeography point object you need to know the latitude and longitude of that point. There are many services that allow lookup these values for a given place, so we can pass the string "Glasgow" and get back the values 56.033113,-4.789563 as a latitude/longitude pair. How can we convert these values to a DbGeography point? Like this: public static DbGeography ConvertLatLonToDbGeography(double longitude, double latitude) { var …[read more]