private void ReplaceItemsCollection(ObservableCollection <TItem> items)
{
RegistryBase <TItem> registry = _registry;
lock (_replaceItemsLocker)
{
if (_items != null)
{
_items.CollectionChanged -= Items_CollectionChanged;
}
if (registry != null && _items != null)
{
_registry.RemoveCollectionFromTrace(_items);
}
_items = items;
if (registry != null && _items != null)
{
_registry.AddCollectionToTrace(items);
}
if (items != null)
{
items.CollectionChanged += Items_CollectionChanged;
}
IDisposable safeUsageOperation = EnterSafeUsage();
if (safeUsageOperation == null)
{
return;
}
using (safeUsageOperation)
using (_itemsLocker.EnterWriteLock())
_itemsAreModified = true;
}
}
