Gets or sets the index of the currently selected RibbonDropDownItem.
Assembly: Microsoft.Office.Tools.Common (in Microsoft.Office.Tools.Common.dll)
Assigning a new value to the property does not cause a SelectionChanged event to be raised.
Values assigned to the must be from 0 (zero) through (Items.Count - 1).
If the Items collection is empty, this property returns -1.
- 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.