public virtual void RemoveItem(DataViewModel viewmodel)
{
if (SelectedItem == viewmodel)
{
SelectedItem = null;
}
Items.Remove(viewmodel);
}
public virtual void OnSourceCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.NewItems != null && e.NewItems.Count > 0)
{
foreach (DataModel model in e.NewItems)
{
Items.Add(NewItem(model));
}
}
if (e.OldItems != null && e.OldItems.Count > 0)
{
foreach (DataModel model in e.OldItems)
{
DataViewModel viewmodel = FindByID(model.ID);
if (viewmodel != null)
{
RemoveItem(viewmodel);
}
}
}
}