A bug has been introduced in the RadListView control in one of the newer releases: When the control is set to DetailsView the ItemMouseDoubleClick-even will always fire twice. This is not the case when the RadListView has the ListView or IconsView ViewType. To repoduce the bug: Create a new project with a new form, add a RadListView and a few items to the ListView, set ViewMode to DetailsView, add the event and marvel at the event firing twice.