public IActionResult DeleteHoliday([FromBody] Guid NewHoliday) { if (ModelState.IsValid) { var CheckGuid = _context.PublicHolidays.Find(NewHoliday); if (CheckGuid == null) // Checking if user input Guid is in database { return(NotFound()); // If Guid is not in database, return 404 error } _dataAccessProvider.DeleteHoliday(NewHoliday); // If Guid is in database, delete the row in database return(Ok()); // return successfully deleted } return(BadRequest(ModelState)); // if ModelState not valid, show error message }