c# - How to draw & save a map pushpin from current location to a map? Windows phone -

i've started using maps in windows phone application , have figured out how current coordinates i'm not sure how draw pushpin on map.

this have far calls getcoordinates method , navigates map on button click.does know how pass coordinates map , draw pushpin?

private async task getcoordinates(string name = "my car")         {             await task.run(async () =>             {                 // phone's current location.                 geolocator mygeolocator = new geolocator();                 mygeolocator.desiredaccuracyinmeters = 5;                 geoposition mygeoposition = null;                 try                 {                     mygeoposition = await mygeolocator.getgeopositionasync(timespan.fromminutes(1), timespan.fromseconds(10));                  }                 catch (unauthorizedaccessexception)                 {                     messagebox.show("location disabled in phone settings or capabilities not checked.");                 }                 catch (exception ex)                 {                     // else happened while acquiring location.                     messagebox.show(ex.message);                 }             });         }           //sets location of parking space using getcoordinates method         //opens map          private async void setlocationbtn_click(object sender, routedeventargs e)         {              await this.getcoordinates();             navigationservice.navigate(new uri("/maps.xaml", urikind.relative));         } 

and map class doesn't anyting yet, there way pass geocoordinates previous class map , draw pushpin? thinking of doing in onnavigatedto method somehow :

public partial class maps : phoneapplicationpage { geolocator geolocator = null; bool tracking = false; progressindicator pi; maplayer pushpinmaplayer;

    public maps()     {         initializecomponent();         pi = new progressindicator();         pi.isindeterminate = true;         pi.isvisible = false;     }       protected override void onnavigatedto(navigationeventargs e)     {          base.onnavigatedto(e);     }  } 

to add pin map:

        var overlay = new mapoverlay         {             positionorigin = new point(0.5, 0.5),             geocoordinate = location, // takes geocoordinate instance. convert geoposition geocoordinate             content = new textblock{text = "hello"}; // can use uielement pin         };          var ml = new maplayer { overlay };          map.layers.add(ml); 

you can append latitude , longitude of position query in uri pass navigationserivce.navigate, , extract in onnavigatedto event handler e.uri.query.

a tip. task.run schedules task run on thread-pool. task not cpu-bound , therefore task.run not give performance gains.

edit: convert geoposition geocoordinate this:

var location = new geocoordinate(geoposition.coordinate.latitude, geoposition.coordinate.longitude);  

a useful resource nokia wp8 guide