If ellipse is a map shape object (MapEllipse) which is visible over the map, then you can use following method to detect whether specified location is inside the shape:
IsLocationInShape(MapShape shapeToTest, Location location)
> list =
MapShape shape = item
&& shape == shapeToTest)
Then you can loop through the list of the objects and use this method to detect whether the object location is inside the specified shape.
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