topic Re: TileLayer & error handling in .NET Maps SDK Questions

TileLayer & error handling

RistoMoilanen — Tue, 14 Oct 2014 19:17:49 GMT

There is no more TileLoaded event and it's TileLoadEventArgs containing info for i.e httpexceptions. How is tile loading http exceptions meant to be handled in new 10.2.4. version?

Re: TileLayer & error handling

RistoMoilanen — Sat, 18 Oct 2014 11:45:11 GMT

Does anyone know how to access HttpErrors and other tile loading errors when using TiledLayer?

Re: TileLayer & error handling

dotMorten_esri — Mon, 20 Oct 2014 18:15:40 GMT

The .NET runtime's tile loading infrastructure is quite different and these events are not available. Generally if a tile cannot be loaded, it will use a lower-resolution tile to replace it with so you won't get blank space as often. (You can enable/disable this with the TiledLayer.ResamplingMode Property though)

Re: TileLayer & error handling

RistoMoilanen — Thu, 23 Oct 2014 19:25:56 GMT

Thanks for your answer. Another question related to base map tile loading.

In previous esri map control versions we could access TileLoaded-event and save loaded tiles to disk for offline use. When user didn't have internet access, we could still show maps from device disk (with the help of TileLoading-event).

Is there nowadays any offline tile cache generating mechanisms "on-the-fly" (without explicitly downloading the whole base map from server with Export Tile Cache functionality..)?

Re: TileLayer & error handling

dotMorten_esri — Thu, 23 Oct 2014 21:13:44 GMT

If you loose connectivity intermittently, the tiles are cached locally in the session and will still be able to load.

For true off-line capability that works across multiple sessions, Export Tile Cache and pre-provisioned local tile caches (.tpk) is the recommended approach.

Re: TileLayer & error handling

MichaelBranscomb — Mon, 27 Oct 2014 12:34:24 GMT

Further to Morten's reply, if you are downloading and storing individual tiles you should review the licensing terms to ensure it is ok to do so in your scenario: Terms of Use | ArcGIS for Developers.

Cheers