Контекстное меню для Pushpin

ObservableCollection<Stations> stations = new ObservableCollection<Stations>() 
    {
        new Stations { Coordinate = new GeoCoordinate(64.551620,40.550726), Address = "St1", Name ="АЗС"},
        new Stations() { Coordinate = new GeoCoordinate(64.554186,40.567711), Address = "Ладушка" , Name ="Ладушка" },
        new Stations() { Coordinate = new GeoCoordinate(64.531738,40.605389), Address = "ТатНефть" , Name ="ТатНефть"},
        new Stations() { Coordinate = new GeoCoordinate(64.536427,40.558363), Address = "Лукойл" , Name ="Лукойл"},
        new Stations() { Coordinate = new GeoCoordinate(64.533909,40.582546), Address = "Роснефть" , Name ="Роснефть"}
    };
 
            ObservableCollection<DependencyObject> children = MapExtensions.GetChildren(Map);
            var obj =
                children.FirstOrDefault(x => x.GetType() == typeof(MapItemsControl)) as MapItemsControl;
 
            obj.ItemsSource = stations;
      
            //Map.SetView(new GeoCoordinate(64.545221,40.542465), 16);
        }