ArcGISWindowsPhoneSDK.ResampleNoDataTiles.isNoDataTile C# (CSharp) Method

        private bool isNoDataTile(Stream imageStream, int wkid)
        {
            if (imageStream == null) return true;

            // Bytes in no data tile for tiled map service.  Often different for different services.
            int no_data_length = 2521;

            // If equal, its a no data tile
            return imageStream.Length == no_data_length;
        }