public void GetContacts(Action <IQueryable <ContactModel> > callback)
{
var timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromMilliseconds(1000);
timer.Tick += (o, e) =>
{
((DispatcherTimer)o).Stop();
callback(ContactDb.GetContacts());
};
timer.Start();
}
public void DeleteContact(ContactModel contact)
{
ContactDb.Delete(contact);
}