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How to make deleting items in a TListView faster

Title: How to make deleting items in a TListView faster procedure AddNewListViewItems; var oldViewStyle: TViewStyle; begin odlViewStyle := ListView1.ViewStyle; ListView1.ViewStyle := vsList; ListView1.Items.Clear; { Add new Listitems here } { An dieser werden die neuen ListItems eingef¨¹gt } ListView1.ViewStyle := oldViewStyle; end;