method ComboBox.FreezeEvents (Freeze as Boolean)
Prevents the control to fire any event.

TypeDescription
Freeze as Boolean A Boolean expression that specifies whether the control' events are froze or unfroze
The FreezeEvents(True) method freezes the control's events until the FreezeEvents(False) method is called. You can use the FreezeEvents method to improve performance of the control while loading data into it.