Creating a DbGeography describing a rectangle

Question

I have a two points describing a rectangle:
a Northeast Lat/Long and a Southwest Lat/Long.

What will be the correct and efficient way to generate a simple rectangle entity that can be stored in a DbGeography field?

Note that later on I would like to use that field to determine if a POINT is inside this Rectangle.

I realize I should use DbGeography.FromText(...) methods, but I'm not sure how.

Answer 1

The FromText method expects a WKT representation, in this case for a polygon:

Something like this should do the trick:

DbGeography box = DbGeography.FromText(
    string.Format("POLYGON(({0} {1}, {0} {2}, {3} {2}, {3} {1}, {0} {1}))",
                         nwLongitude, 
                         nwLatitude,
                         seLatitude,
                         seLongitude), 4326);