public ActionResult Create(CandidateExcel ce)
{
bool isSaved = UpdateCandidateExcel(ce);
ViewBag.isSaved = isSaved;
ViewBag.selectedBatchId = ce.BatchId;
ViewBag.Students = db.Students.Where(s => s.BatchId == ce.BatchId).ToList();
return(View(ce));
}
public bool UpdateCandidateExcel(CandidateExcel ce)
{
bool isSavedSuccessfully = false;
var tpId = Convert.ToInt32(System.Web.HttpContext.Current.User.Identity.Name);
if (ModelState.IsValid)
{
try
{
if (!ce.ValidExcelFormets.Contains(ce.File.FileName.Split('.').Last()))
{
ModelState.AddModelError("File", "Upload a valid Candidate Excel File, allowed formats are : " + ce.ValidExcelFormets);
}
else
{
using (BinaryReader b = new BinaryReader(ce.File.InputStream))
{
Stream stream = new MemoryStream(b.ReadBytes(ce.File.ContentLength));
IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream);
DataSet ds = excelReader.AsDataSet();
stream.Close();
var students = new List <Student>();
for (int i = 1; i < ds.Tables["Sheet1"].Rows.Count; i++)
{
students.Add(new Student()
{
BatchId = ce.BatchId,
CandidateCode = ds.Tables["Sheet1"].Rows[i][1].ToString(),
StudentName = ds.Tables["Sheet1"].Rows[i][2].ToString(),
TpId = tpId,
});
}
if (db.Students.Any(s => s.BatchId == ce.BatchId))
{
db.Students.RemoveRange(db.Students.Where(s => s.BatchId == ce.BatchId));
}
db.Students.AddRange(students);
db.SaveChanges();
isSavedSuccessfully = true;
}
}
}
catch (Exception ex)
{
ModelState.AddModelError("File", "Invalid Excel : " + ex.Message);
}
}
return(isSavedSuccessfully);
}