The RemoveItem method isn’t supported and can be rendered using the RemoveAt method of the Items collection. There are other differences in behavior to take into account, though. For example, under VB6 the ListIndex property points to the element prior to the one being removed if the ListBox supports multiple selections, whereas in VB.NET the ListIndex property is always set to -1.

VB Migration Partner support this method and perfectly replicates all its quirks, thus no adjustments are necessary after the migration.