file list from OpenDialog?

I can see that the dialog box returns the number of files actually selected.

Dim fileCount As Integer = dlg.Count For i As Integer = 0 To fileCount - 1 Listbox1.AddRow(dlg.Item(i).Name) Next
However I’m confused by the ‘f’ returned by

 f = dlg.ShowModal

If f is nil then cancel was pressed… but if multiple are selected what is ‘f’?

First file.