The PictureHubTile type exposes the following members.
Initializes a new instance of the PictureHubTile class.
A callback that if set will be used to generate an ImageSource based on the provided string uri.
This collection is used only during design-time so that the user
can manually add image sources.
Gets the ImageSources collection. Images are randomly chosen from this
collection when an image needs to be displayed.