AnyPlace.MainPage.image_mylocation_Tap C# (CSharp) Method

        void image_mylocation_Tap(object sender, GestureEventArgs e)
        {
            if (Mymap.Layers.Contains(mypositionPoi))
            {
                Mymap.Layers.Remove(mypositionPoi);
                mypositionPoi.Clear();
            }

            if (Mymap.Layers.Contains(detailPois))
            {
                Mymap.Layers.Remove(detailPois);
                detailPois.Clear();
            }

            var img = (Ellipse)sender;
            var poi = img.DataContext as MyLocationPoi;
            var over = new MapOverlay { GeoCoordinate = poi.cordinate };
            var control = new MyLocationPoiControl();
            control.grd_loc.Tap += grd_loc_Tap;
            if (!_sourcePoi && !_externalSource)
                control.btn_source.Visibility = Visibility.Collapsed;
            control.btn_source.Click += my_locabtnclick;
            over.Content = control;
            over.PositionOrigin = new Point(0.5, 1.0);
            mypositionPoi.Add(over);
            Mymap.Layers.Add(mypositionPoi);

        }