private static MapPoint GetLastPoint(Geometry geometry)
{
MapPoint lastPoint = null;
IEnumerable <PointCollection> pointCollections = null;
if (geometry is Polygon)
{
pointCollections = ((Polygon)geometry).Rings;
}
else if (geometry is Polyline)
{
pointCollections = ((Polyline)geometry).Paths;
}
if (pointCollections != null)
{
PointCollection lastPointCollection = pointCollections.LastOrDefault();
if (lastPointCollection != null)
{
lastPoint = lastPointCollection.LastOrDefault();
}
}
return(lastPoint);
}
public void UpdateLastPoint(Point point)
{
if (_points.Count > 1)
{
_points.Remove(_points.LastOrDefault());
}
AddPoint(point);
}