When the mouse pointer over the object of the graveyard is displayed, it is necessary to display a pop-up window with information on a specific object. How to do it? What event is triggered when the mouse is over the object, and how to handle it?
There are no event like this. You could use mouse-move events to detect movement, and once the movement stops for a certain amount of time, use the MapView.IdentifyLayersAsync method to perform an identify on the layer(s) you're interested in. If you hit something, then display a popup for the top-most feature returned.
Note: Don't do this on each mouse-move, since this is an expensive operation, so make sure you wait till the mouse has stopped moving (500-1000ms is probably a good number).
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