MultiBinding with MultiValueConverter does not update

Question

it seems that I have a problem with my multibinding.

Scenario:
I have a window with two datepickers and a listview. The listliew contains some data bound element

Answer 1

I think the following might cause this: If you bind directly to the Entries the ListView will listen to CollectionChanged events, but if such a binding is inside a MultiBinding the only thing that would cause a reevaluation could be a PropertyChanged notification, which might not exist for the Entries property in your model.

Maybe you can subscribe to the CollectionChanged event of your collection and raise a PropertyChanged event or get the BindingExpression within your MultiBinding to call an update manually.