C# Force ListBox to update elements

Question

I\'m subclassing the standard ListBox control. I get notified of changes to any of the elements added to the list. The task is to update the text shown by the ListBox for th

Answer 1

Unfortunately, the data-binding in ListView doesn't support regular (item) change notification events (FooChanged / INotifyPropertyChanged). However, if you know about the change, you can get the list to re-bind itself. Since you are subclassing, you can call:

this.RefreshItems();

or for a single item:

this.RefreshItem(index);

Otherwise, since this isn't public, you can simulate it by changing the DisplayMember:

lb.DisplayMember = "";
lb.DisplayMember = "Bar";

A little hacky, maybe, but it works, and maintains the current selection etc (unlike clearing the DataSource).