/// <summary>
        ///
        /// </summary>
        /// <param name="FilePath"></param>
        /// <param name="Extension"></param>
        /// <returns></returns>
        public static string ChangeFileExtension(this string FilePath, string Extension)
        {
            FileInfo fi = new FileInfo(FilePath);

            string new_path = fi.ChangeFileExtension(Extension);

            fi = null;

            return(new_path);
        }