Does WPF DataGrid fire an event when a row is added / removed?

Question

I wish to recalculate things everytime a DataGrid gets more rows or some are removed. I tried to use the Loaded event, but that was fired only once.

I found

Answer 1

If you want use ObservableCollection and get notification about add or another operation, the best way use INotifyCollectionChanged

var source = datagrid.ItemsSource as INotifyCollectionChanged;

Because, when you will unwrap to ObservableCollection<MyClass>(), you must write strogly MyClass (not ObservableCollection<ParentOfMyClass>())