在Windows Phone 8.1上获取给定CivicAddress的坐标/地理位置

Question

From eveywhere I've looked I found how to get the CivicAddress of a specific set of coordinates, like so (thanks @Romasz for the answer):

var geolocator = new Geolocator();
geolocator.DesiredAccuracyInMeters = 100;
Geoposition position = await geolocator.GetGeopositionAsync();

// reverse geocoding
BasicGeoposition myLocation = new BasicGeoposition {
     Longitude = position.Coordinate.Longitude,
     Latitude = position.Coordinate.Latitude
};

Geopoint pointToReverseGeocode = new Geopoint(myLocation);
MapLocationFinderResult result = await MapLocationFinder.FindLocationsAtAsync(pointToReverseGeocode);

string country = result.Locations[0].Address.Country;

However, I have the CivicAddress but I need to know it's coordinates. How can I do this?

Answer 1

MapLocationFinderResult has some useful properties and you should be able to retrive the GeoPoint like this:

Geopoint point = result.Locations.FirstOrDefault().Point;

That's for the code from your question. However if you want to find something depending on its name, then you can use MapLocationFinder.FindLocationsAsync :

MapLocationFinderResult result = await MapLocationFinder.FindLocationsAsync("Hospital", myGeopoint, maxResults);
Geopoint point = result.Locations.FirstOrDefault().Point;

GeoPoint in this method is used as a helper - there may be many 'Hospitals' in area and the method should return the nearest one.

---

EDIT - some more information:

If you don't want to provide any starting GeoPoint , then provide the default one:

MapLocationFinderResult result = await MapLocationFinder.FindLocationsAsync("Lizbona", new Geopoint(new BasicGeoposition()), 5);
var point = result.Locations.ToList();

Remember the results depend on what you put in the string, for the above example I get two results - one in Portugal with geoposition Lat = 38,72 Long = -9,15 and second in Poland with geoposition Lat = 52,67 Long = 16,48 (which statnds for town in Poland). Both exist and both are correct - it just depends on your input. On the other hand if I search for "Lizbon" - I will get only one result, if "Lisbon" - four results. It probably will also depend on the user's language.