private void button1_Click(object sender, EventArgs e) { List <Person> people = new List <Person>(); context.People.Add(new Person { Name = txbx_name.Text, Surname = txbx_surname.Text, Email = txbx_email.Text, Password = txbx_password.Text }); context.SaveChanges(); var data = dBQuery.ByEmailUser(txbx_email.Text); SessionDb.Session.People = data; context.RegisterPhones.Add(new RegisterPhoneNumber { NumberPhone = txbx_number.Text, PersonId = data.Select(x => x.Id).FirstOrDefault() }); context.SaveChanges(); MessageBox.Show("Tebrikler Qeydiyyatdan kecdiniz"); }