// The business logic behind the UI should provide the contacts data.
// If WPF is used for example, the view model should prepare a Contact object and pass it to this service.
public bool AddContact(Contact contact)
{
if (contact == null)
return false;
try
{
this.contactsContainer.ContactSet.Add(contact);
var writtenObjectsCount = this.contactsContainer.SaveChanges();
return writtenObjectsCount > 0;
}
catch
{
// TODO: log exception
return false;
}
}
public bool UpdateContact(int contactId, Contact updateData)
{
var contactToUpdate = this.contactsContainer.ContactSet.Find(contactId);
if (contactToUpdate == null || updateData == null || contactToUpdate.Equals(updateData))
return false;
try
{
// TODO: Update contact's details from updateData object
var writtenObjectsCount = this.contactsContainer.SaveChanges();
return writtenObjectsCount > 0;
}
catch
{
// TODO: log exception
return false;
}
}