I have a complicated question about two forms.
Form1 contains a Listview with document names. I click a button which opens Form2. In Form2 I show duplicate documents. When I click OK these duplicates are deleted. The Form2 is then closed.
When I return to Form1 I want the Listview updated. So clear it and add the documenst which were left (not deleted).

How does Form1 know that Form2 was closed and thus the Listview should be updated?

Breaking my head.