private static void Cleanup(ContactsContext context)
{
var contactList = context.Contacts.ToList();
foreach (var contact in contactList)
{
// delete emails
var emails = contact.EmailAddresses.ToList();
emails.ForEach(context.DeleteObject);
// delete phone numbers
var phoneNumbers = contact.PhoneNumbers.ToList();
phoneNumbers.ForEach(context.DeleteObject);
// delete address
var addresses = contact.Addresses.ToList();
addresses.ForEach(context.DeleteObject);
// delete contact
context.DeleteObject(contact);
}
context.SaveChanges();
}
private static void UpdateContacts(ContactsContext context)
{
var contacts = context.Contacts.ToList();
foreach (var contact in contacts)
{
// we're going to swap all the first names with last names
var firstName = contact.FirstName;
var lastName = contact.LastName;
contact.FirstName = lastName;
contact.LastName = firstName;
// we're now going to delete a phone number and email address
if (contact.PhoneNumbers.Any())
{
PhoneNumber phoneNumber = contact.PhoneNumbers.First();
context.DeleteObject(phoneNumber);
}
if (contact.EmailAddresses.Any())
{
EmailAddress emailAddress = contact.EmailAddresses.First();
context.DeleteObject(emailAddress);
}
context.SaveChanges();
}
}
