Set the Bounds property to an array of VELatLongRectangle Class objects.

Use the Bounds property, the VETileSourceSpecification.MinZoomLevel Property, and the VETileSourceSpecification.MaxZoomLevel Property to improve Web site performance. The tile layer is not added to the map unless the map is currently displaying the area that the Bounds property specifies, and the zoom level of the map is between the values that the MinZoom and MaxZoom properties specify.