How we add foreign key in asp.net identity MVC Project - asp.net-mvc

Question

ApplicationUser Class which inherit with IdentityUser
public class ApplicationUser : IdentityUser
{
public DateTime BirthDate { get; set; }
public string User_type { get; set; }
public DateTime CreatedOn { get; set; }
public Enums.Sex Gender { get; set; }
public bool IsActive { get; set; }
public virtual Patient Patients { get; set; }
public int PatientID { get; set; }
}
Patient Class
public class Patient
{
[Key]
public int PatientID { get; set; }
public string ProfilePicture { get; set; }
public string FName { get; set; }
public DateTime BirthDate { get; set;}
public string City { get; set; }
public string Country { get; set; }
}
Controller
public async Task<ActionResult> RegisterPatient(RegisterViewModel model)
{
MYDb db = new MYDb();
Patient pt = new Patient();
pt.BirthDate = model.BirthDate;
pt.City = model.City;
pt.Country = model.Country;
pt.ProfilePicture = model.ProfilePicture;
pt.FName = model.FName;
int Pat_id = model.PatientID;
if (ModelState.IsValid)
{
ApplicationUser myuser = new ApplicationUser();
model.CreatedOn = DateTime.Now;
model.IsActive = true;
myuser.PatientID = Pat_id;
if (ModelState.IsValid)
{
var user = model.GetUser();
db.Patients.Add(pt);
db.SaveChanges();
var result = await UserManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
var idManager = new IdentityManager();
idManager.AddUserToRole(user.Id, model.User_type);
//await db.SaveChangesAsync();
await SignInAsync(user, isPersistent: false);
return RedirectToAction("Index", "Home");
}
else
{
AddErrors(result);
}
}
return RedirectToAction("Index", "Home");
}
// If we got this far, something failed, redisplay form
return View();
}
i want to make relationship b/w Patient and ApplicationUser first i
add record in patient then "Patient_ID" used as a foreign key in
ApplicationUser Table but when add data i face this type of error
Error
Note : data save in Patient table but not in ApplicationUser table because ApplicationUser not get "PatientID" therefore conflict occurred in DB.
I hope this is much clear and its not easy to solve :(

Answer 1

In Applicatin User Model Write done this :
public class ApplicationUser : IdentityUser
{
public DateTime BirthDate { get; set; }
public string User_type { get; set; }
public DateTime CreatedOn { get; set; }
public Enums.Sex Gender { get; set; }
public bool IsActive { get; set; }
[ForeignKey("PatientID")]
public virtual Patient Patients{ get; set; }
}
I think it will work.