public bool ContainsContact(Contact contact)
{
if (contact == null)
throw new ArgumentNullException("contact");
return _contacts.Contains(contact);
}
public ContactViewModel(Contact contact, ContactRepository contactRepository)
{
if (contact == null)
throw new ArgumentNullException("contact");
if (contactRepository == null)
throw new ArgumentNullException("contactRepository");
_contact = contact;
_contactRepository = contactRepository;
}
public void AddContact(Contact contact)
{
if (contact == null)
throw new ArgumentNullException("contact");
if (!_contacts.Contains(contact))
{
_contacts.Add(contact);
if (this.ContactAdded != null)
this.ContactAdded(this, new ContactAddedEventArgs(contact));
}
}
public ContactAddedEventArgs(Contact newContact)
{
this.NewContact = newContact;
}