ThinkGeo.com    |     Documentation    |     Premium Support

Does not see any cached tile in local disk

#1

Hi,

I am trying the HowDoI samples for WPF. The one titled “Using tile cache” does not seem to save any tiles into my local folder. The code snippet:

        FileBitmapTileCache bitmapTileCache = new FileBitmapTileCache();
        bitmapTileCache.CacheDirectory = Samples.RootDirectory + @"Data\SampleCacheTiles";
        bitmapTileCache.CacheId = "World02CachedTiles";
        bitmapTileCache.TileAccessMode = TileAccessMode.ReadOnly;
        bitmapTileCache.ImageFormat = TileImageFormat.Png;
        worldOverlay.TileCache = bitmapTileCache;
        worldOverlay.TransitionEffect = TransitionEffect.None;

Thanks,

Liang

#2

Hi Liang_Lu,

Please comment this line:

bitmapTileCache.TileAccessMode = TileAccessMode.ReadOnly;

It means you only read cache but not generate it.

Regards,

Ethan

#3

Hi Ethan,

After commenting out the line, I started to see files adding to the cache directory as program runs. Thank you.

A follow up question, most of the time my program runs on computer with no internet connections at all. Is tile caching a good solution for this situation? Are there any alternatives?

Thanks,

Liang

#4

Hi,

If your data is in local, internet is not important.

If your layer need to connect to internet, the cache is only solution.

Regards,

Ethan