RibbonDropDown.SelectionChanged Event
Occurs when a user selects a new item on a Ribbon drop-down control.
Assembly: Microsoft.Office.Tools.Common (in Microsoft.Office.Tools.Common.dll)
The SelectionChanged event is raised only when the selected item changes, and not in the following circumstances:
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When the user selects the item that was already selected.
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When a user clicks a button.
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When you assign a new value to the SelectedItem or SelectedItemIndex properties in your code.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.