SenseNet.ContentRepository.Storage.BinaryFileName.GetExtension C# (CSharp) Method

        private static string GetExtension(string fileName)
        {
            if (fileName == null) return null;
            int lastSeparatorIndex = fileName.LastIndexOf(fileNameExtensionSeparator, StringComparison.Ordinal);
            if (lastSeparatorIndex < 0)
                return string.Empty;
            return fileName.Substring(lastSeparatorIndex + 1);
        }