//выгрузка CSV-файла

        /*public FileResult GetFile()
         * {
         *  string filePath = Server.MapPath("~/Database/database.csv");
         *  string fileType = "csv";
         *  string fileName = "data.csv";
         *  return File(filePath, fileType, fileName);
         * }*/

        public FileResult GetFile()
        {
            string excelPath    = Server.MapPath("~/DataFiles/data.xls");
            string databasePath = Server.MapPath("~/Database/database.csv");

            FilesHandler.CreateExcelFile(excelPath, databasePath);

            string fileType = "xls";
            string fileName = "data.xls";

            return(File(excelPath, fileType, fileName));
        }