// bind the DisplayMemberPath to DisplayMemberPath of the two list boxes
private static void DisplayMemberPathPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
MultiSelectControl control = sender as MultiSelectControl;
if (control == null)
{
return;
}
control.AvailableListBox.DisplayMemberPath = control.DisplayMemberPath;
control.SelectedListBox.DisplayMemberPath = control.DisplayMemberPath;
}
// get a handle on the default view for Available list box and set filter
private static void ItemsSourcePropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
IEnumerable source = e.NewValue as IEnumerable;
MultiSelectControl control = sender as MultiSelectControl;
if (source == null || control == null)
{
return;
}
control.availableItemsCollectionView = CollectionViewSource.GetDefaultView(source);
control.availableItemsCollectionView.Filter = new Predicate <object>(control.FilterOutItems);
}
// get a handle on the default view for Selected list box and set filter
private static void SelectedItemsPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
IList source = e.NewValue as IList;
MultiSelectControl control = sender as MultiSelectControl;
if (source == null || control == null)
{
return;
}
control.selectedItemsCollectionView = CollectionViewSource.GetDefaultView(source);
control.selectedItemsCollectionView.Filter = new Predicate <object>(control.FilterOutSelectedItems);
// refresh the available items list to ensure that it shows correct data
control.availableItemsCollectionView.Refresh();
}
