public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
// We are binding an item
DataItem item = value as DataItem;
if (item != null)
{
return(item.Owner.Where(i => i.ParentId == item.Id));
}
// We are binding the treeview
DataItemCollection items = value as DataItemCollection;
if (items != null)
{
return(items.Where(i => i.ParentId == 0));
}
return(null);
}
internal void SetOwner(DataItemCollection collection)
{
this.Owner = collection;
}