Xaye.Fred.Fred.GetExtension C# (CSharp) Méthode

        private static string GetExtension(string filename)
        {
            if (IsNullOrWhiteSpace(filename))
            {
                return Empty;
            }
            var index = filename.LastIndexOf(".", StringComparison.CurrentCultureIgnoreCase);
            if (index == -1 || index == filename.Length)
            {
                return Empty;
            }

            return filename.Substring(index + 1, filename.Length - index - 1);
        }