Draw states in mapControl - winrt-xaml

Question

I'm writing an application for windows Phone and I'm using a MapControl.
I'd like to be able to paint the US States in different colors.
For example, CA in Red, NV in blue, etc
I Thought about doing Shapes and Polilines, but I can't find the coordinates to use in the shapes to get the different States.
I also tried using the
var found = await MapLocationFinder.FindLocationsAsync("California", new Geopoint(new BasicGeoposition()));
but it doesn't work for finding States.

Answer 1

The best way is to download GeoJSON files from this public repository
https://github.com/johan/world.geo.json/tree/master/countries/USA
Parse the JSON and Create MapPolygon object and add it to map.
public async void RenderState() {
HttpClient client = new HttpClient();
HttpResponseMessage response=await client.GetAsync(new Uri("https://raw.githubusercontent.com/johan/world.geo.json/master/countries/USA/CO.geo.json"));
string json=response.Content.ToString();
JObject obj = JObject.Parse(json);
JObject poly = (JObject)obj["features"][0]["geometry"];
JArray coords = (JArray)poly["coordinates"][0];
MapPolygon polygon = new MapPolygon();
List<BasicGeoposition> points = new List<BasicGeoposition>();
foreach (JArray arr in coords) {
points.Add(new BasicGeoposition() { Latitude = (double)arr[1], Longitude = (double)arr[0] });
}
//Remove last point as it is a duplicate
if (points.Count > 1) {
points.RemoveAt(points.Count - 1);
}
polygon.Path = new Geopath(points);
polygon.StrokeColor = Colors.Red;
polygon.FillColor = Colors.Blue;
this.mMap.MapElements.Add(polygon);
}
This code will render the state of colarado