Question

I have a ObservableCollection property and also this property

 public ListCollectionView ListView
 {
    get
    {
      return (ListCollectionView)(CollectionViewSource.GetDefaultView(List));
    }
 }

With List being the ObservableCollection

In WPF I have a ListView Control bound to the ListView property.

So as I understand it if I change the ObservableCollection in code it should be reflected in the View.

But what if I just do List = new ObservableCollection<SomeType>(someElements)

The list in the View doesn’t update at all. Is there anyway to get it to refresh in code behind if I’m doing it MVVM ?

Answer 1

Add another change notification for the view:

public ObservableCollection<...> List
{
    get {...}
    set
    {
        if (list != value)
        {
            list = value;
            OnPropertyChanged("List");
            OnPropertyChanged("ListView");
        }
    }
}