# `BCCollectionViewDelegate collectionView:updateViewControllerAsSelected:forItem:`

*Instance Method*

## Declaration

```swift
optional func collectionView(_ collectionView: BCCollectionView!, updateViewControllerAsSelected viewController: NSViewController!, forItem item: Any!)
```

```objc
- (void) collectionView:(BCCollectionView *) collectionView updateViewControllerAsSelected:(NSViewController *) viewController forItem:(id) item;
```

```python
collectionView_updateViewControllerAsSelected_forItem_(collectionView: BCCollectionView, viewController: NSViewController, item: object)
```