In January I asked for overloading ImageTiledLayer in WPF API v 100.0. In summary
with same tile info ImageTiledLayer.GetTileDataAsync is never invoked, but ServiceImageTiledLayer.GetTileUriAsync is invoked correctly. The result was that I used ServiceImageTiledLayer.
In release notes for version 100.1 is:
"Also, custom tiled layers can be created by sub-classing ImageTiledLayer and its subclass, ServiceImageTiledLayer. These two abstract classes expose protected abstract methods to either fetch tile images or return the URL of the tile images".
So I tried use ImageTiledLayer, but GetTileDataAsync is never called.
Can you please provide an example with functional overriding of ImageTiledLayer?