RibbonComboBox.ItemsLoading Event
Definition
Important
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Occurs when the drop-down list for this RibbonComboBox is opened.
event Microsoft.Office.Tools.Ribbon.RibbonControlEventHandler ItemsLoading;Event Type
Remarks
Items added to a RibbonComboBox while its drop-down list is closed are not loaded into the Office application until the user opens the drop-down list.
You can use this event to update the list of items in this RibbonComboBox before it is shown to the user.