partial void DeletePhoneBook(PhoneBook instance);
partial void UpdatePhoneBook(PhoneBook instance);
private void detach_PhoneBooks(PhoneBook entity)
{
this.SendPropertyChanging();
entity.User = null;
}
partial void InsertPhoneBook(PhoneBook instance);
private void attach_PhoneBooks(PhoneBook entity)
{
this.SendPropertyChanging();
entity.User = this;
}