Cannot save entity one to one EF mvc 5 - asp.net

Question

I am trying to insert a new record into database, no errors, a new record is not created in Applicant and ApplicantNotification table. Not sure what I am doing wrong?
Applicant
[Index]
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public int ApplicantID { get; set; }
[Required]
public string ApplicantTitle { get; set; }
[Required]
public string Firstname { get; set; }
[Required]
public string Lastname { get; set; }
[Required]
public string Address { get; set; }
[Required]
public string Address1 { get; set; }
[Required]
public string Address2 { get; set; }
[Required]
public string Address3 { get; set; }
[Required]
public string Postcode { get; set; }
[Required]
public string CaseReference { get; set; }
[DataType(DataType.Date)]
public DateTime DateOfBirth { get; set; }
/*Spouse*/
public string SpouseTitle { get; set; }
public string SpouseFirstname { get; set; }
public string SpouseLastname { get; set; }
public string SpouseAddress { get; set; }
public string SpouseAddress1 { get; set; }
public string SpouseAddress2 { get; set; }
public string SpouseAddress3 { get; set; }
public string SpousePostcode { get; set; }
ApplicantNotification
[Index]
[Key, Column("ApplicantID"), ForeignKey("Applicant")]
public int ApplicantNotificationID { get; set; }
public bool FirstNotification { get; set; }
public bool SecondtNotification { get; set; }
public bool ThirdNotification { get; set; }
public bool FinalNotification { get; set; }
public DateTime ReminderDate { get; set; }
public int ReminderFrequency { get; set; }
[DataType(DataType.Date)]
public DateTime? FirstNotificationDate { get; set; }
[DataType(DataType.Date)]
public DateTime? SecondNotificationDate { get; set; }
[DataType(DataType.Date)]
public DateTime? ThirdNotificationDate { get; set; }
public bool IsArchive { get; set; }
public virtual Applicant Applicant { get; set; }
ViewModel
public int ApplicantID { get; set; }
[Required]
public string ApplicantTitle { get; set; }
public string ApplicantFirstname { get; set; }
public string ApplicantLastname { get; set; }
public string ApplicantAddress { get; set; }
public string ApplicantAddress1 { get; set; }
public string ApplicantAddress2 { get; set; }
public string ApplicantAddress3 { get; set; }
public string ApplicantPostcode { get; set; }
[Required]
public string ApplicantCaseReference { get; set; }
[Required]
[DataType(DataType.Date)]
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
public DateTime ApplicantDateOfBirth { get; set; }
/*Spouse*/
public string SpouseTitle { get; set; }
public string SpouseFirstname { get; set; }
public string SpouseLastname { get; set; }
public string SpouseAddress { get; set; }
public string SpouseAddress1 { get; set; }
public string SpouseAddress2 { get; set; }
public string SpouseAddress3 { get; set; }
public string SpousePostcode { get; set; }
/*Notification*/
public int ApplicantNotificationID { get; set; }
public bool FirstNotification { get; set; }
public bool SecondNotification { get; set; }
public bool ThirdNotification { get; set; }
public bool FinalNotification { get; set; }
public DateTime? ReminderDate { get; set; }
Create Method:
// POST: Applicant/Create
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create(ApplicantNotificationViewModel model)
{
var applicant = new Applicant();
var applicantNotification = new ApplicantNotification();
if (ModelState.IsValid)
{
SetApplicant(model, applicant);
SetApplicantNotification(model, applicantNotification);
using (var context = new WorkSmartContext())
{
using (var dbContextTransaction = context.Database.BeginTransaction())
{
try
{
db.Applicants.Add(applicant);
context.SaveChanges();
db.ApplicantNotifcations.Add(applicantNotification);
context.SaveChanges();
dbContextTransaction.Commit();
}
catch (Exception)
{
dbContextTransaction.Rollback();
}
}
return RedirectToAction("Index");
}
}
return View(model);
}

Answer 1

Thanks for the suggestions in the comments.
It appears, if the datetime column is set to allow null, then the datetime either has to be set to null or set to the correct format in order for sql datetime to work. Otherwise it throws the
"The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value.\r\The statement has been terminated."
https://stackoverflow.com/questions/4608734/the-conversion-of-a-datetime2-data-type-to-a-datetime-data-type-resulted-in-an-o
I set the dates to null in my Entity objects, and entered a new entry to the database.