private static void OnItemsSourcePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
MyVirtualizingPanel virtualizingPanel = d as MyVirtualizingPanel;
if (virtualizingPanel == null)
{
return;
}
virtualizingPanel.ClearItems();
INotifyCollectionChanged collection1 = e.OldValue as INotifyCollectionChanged;
if (collection1 != null)
{
virtualizingPanel.UnhookCollectionChanged(collection1);
}
INotifyCollectionChanged collection2 = e.NewValue as INotifyCollectionChanged;
if (collection2 == null)
{
return;
}
List <IVirtualizable> virtualizableList = new List <IVirtualizable>();
foreach (object obj in (IEnumerable)(collection2 as ICollection))
{
if (obj is IVirtualizable)
{
virtualizableList.Add(obj as IVirtualizable);
}
}
virtualizingPanel.AddItems((IEnumerable <IVirtualizable>)virtualizableList);
virtualizingPanel.HookUpCollectionChanged(collection2);
}
private static void OnItemsSourcePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
MyVirtualizingPanel virtualizingPanel = d as MyVirtualizingPanel;
if (virtualizingPanel == null)
{
return;
}
virtualizingPanel.ClearItems();
// ISSUE: explicit reference operation
INotifyCollectionChanged oldValue = e.OldValue as INotifyCollectionChanged;
if (oldValue != null)
{
virtualizingPanel.UnhookCollectionChanged(oldValue);
}
// ISSUE: explicit reference operation
INotifyCollectionChanged newValue = e.NewValue as INotifyCollectionChanged;
if (newValue == null)
{
return;
}
List <IVirtualizable> virtualizableList = new List <IVirtualizable>();
IEnumerator enumerator = (newValue as ICollection).GetEnumerator();
try
{
while (enumerator.MoveNext())
{
object current = enumerator.Current;
if (current is IVirtualizable)
{
virtualizableList.Add(current as IVirtualizable);
}
}
}
finally
{
IDisposable disposable = enumerator as IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
virtualizingPanel.AddItems((IEnumerable <IVirtualizable>)virtualizableList);
virtualizingPanel.HookUpCollectionChanged(newValue);
}
