private static void DownloadTile(object tile) { var parameters = (object[])tile; var tileInfo = (TileInfo)parameters[0]; var doneEvent = (MultipleThreadResetEvent)parameters[1]; var url = ((WebTileProvider)_tileSource.Provider).Request.GetUri(tileInfo); var request = new GZipWebClient(); var bytes = request.DownloadData(url); if (bytes != null) { var stream = new MemoryStream(bytes); Logger.Debug("Start parsing vector tile..."); var layerInfos = VectorTileParser.Parse(stream); tiles[tileInfo] = layerInfos; } doneEvent.SetOne(); }