C# - LINQ - shortest distance by GPS latitude and longitude

Question

I have database and in it I have class hotel with gps coordinates. I want to get closest places to coordinates which I choose.

I think It should look like this (I found

Answer 1

You can use the object initializer instead of parameterized constructor:

var nearest = (from h in db.hotels
           let geo = new GeoCoordinate{ Latitude = h.gps.lat, Longitude = h.gps.lng}
           orderby geo.GetDistanceTo(coord)
           select h).Take(10);

But you will likely have problems caused by the GetDistanceTo method, could you provide the implementation of that method?