BruTile.GoogleMaps.GoogleV3TileProvider.ComposeErrorMessage C# (CSharp) Метод

        private static string ComposeErrorMessage(WebResponse webResponse, string uri)
        {
            string message = String.Format(
                CultureInfo.InvariantCulture,
                "Failed to retrieve tile from this uri:\n{0}\n.An image was expected but the received type was '{1}'.",
                uri,
                webResponse.ContentType
            );

            if (webResponse.ContentType.StartsWith("text", StringComparison.OrdinalIgnoreCase))
            {
                using (Stream stream = webResponse.GetResponseStream())
                {
                    message += String.Format(CultureInfo.InvariantCulture,
                      "\nThis was returned:\n{0}", ReadAllText(stream));
                }
            }
            return message;
        }