public ResponseData UploadStudents(IFormFile formFile) { try { if (formFile != null && formFile.Length > 0) { Console.WriteLine("file name " + formFile.FileName); XSSFWorkbook excelUpload; using (var excelStream = formFile.OpenReadStream()) excelUpload = new XSSFWorkbook(excelStream); var programme = _programmeRepository.ReadDefaultProgramme(); if (programme.Id == 0) { return(ResponseData.SendFailMsg("No programme exist yet. Kindly create at least one")); } var sheet = excelUpload.GetSheet("Students"); for (var row = 1; row <= sheet.LastRowNum; row++) // iterating through rows { if (!CreateStudent(new Student { FirstName = sheet.GetRow(row).GetCell(0).StringCellValue, LastName = sheet.GetRow(row).GetCell(1).StringCellValue, Email = sheet.GetRow(row).GetCell(2).StringCellValue, MatricNumber = sheet.GetRow(row).GetCell(3).StringCellValue, ProgrammeId = programme.Id })) { return(ResponseData.SendFailMsg("Attempted to upload an Invalid student. Kindly retry with valid students")); } } return(ResponseData.SendSuccessMsg()); } return(ResponseData.SendFailMsg("Invalid upload file supplied")); } catch (Exception e) { Console.WriteLine(e); return(ResponseData.SendFailMsg("Error in uploading students. Kindly retry with valid students")); } }