public void deleteRegistration(Registration r)
{
try
{
using (var db = new DataContext())
{
var orig = db.Registrations.Find(r.RegistrationID);
if (orig != null)
{
db.Registrations.Remove(orig);
db.SaveChanges();
}
}
}
catch (DbUpdateConcurrencyException)
{
throw;
}
catch (DbUpdateException)
{
MessageBox.Show("You can not delete used registartion.", "Registration Deletion Error");
return;
}
catch (DbEntityValidationException)
{ throw; }
}
public void deleteRegistration(Registration r)
{
try
{
using (var db = new DataContext())
{
var orig = db.Registrations.Find(r.RegistrationID);
if (orig != null)
{
db.Registrations.Remove(orig);
db.SaveChanges();
}
}
}
catch (DbUpdateConcurrencyException)
{
throw new EresDataContextException("Blad polaczania z baza danych. Sprobuj jeszcze raz.", "Usuwanie rejestracji");
}
catch (DbUpdateException)
{
throw new EresDataContextException("Nie mozna usunac trwajacej rejestracji!", "Usuwanie rejestracji");
}
catch (DbEntityValidationException)
{
throw new EresDataContextException("Blad polaczania z baza danych.", "Usuwanie rejestracji");
}
}
public void createRegistration(int realId, int studId)
{
try
{
using (var db = new DataContext())
{
var real = db.Realisations.Find(realId);
var stud = db.Students.Find(studId);
var reg = new Registration { Realisation = real, Student = stud };
db.Registrations.Add(reg);
db.SaveChanges();
}
}
catch (DbEntityValidationException)
{ throw; }
}
public void createRegistration(int realId, int studId)
{
try
{
using (var db = new DataContext())
{
var real = db.Realisations.Find(realId);
var stud = db.Students.Find(studId);
var reg = new Registration { Realisation = real, Student = stud };
db.Registrations.Add(reg);
db.SaveChanges();
}
}
catch (DbEntityValidationException)
{
throw new EresDataContextException("Blad polaczania z baza danych.", "Dodawanie rejestracji");
}
}
