Question

ItemsSource: an ObservableCollection of raw data.
Converter: generating a view model by applying a complex non-linear transform on ItemsSource. Converter output is a plain list.

I know the design is wrong, I should create view model layer with NotifyPropertyChanged events, but this is a quick prototype for something, I’m just hoping there is an easy trick to force the DataGrid rerun converter whenever ItemsSource updates.

Answer 1

You can fire property-level change notifications when the collection changes, this forces a reevaluation of the ItemsSource binding.

i.e.

//Data being the ObservableCollection
Data.CollectionChanged += (s,e) => OnPropertyChanged("Data");