The event arguments used by ComboBox's DropDownOpened event.

Namespace: Autodesk.Revit.UI.Events
Assembly: RevitAPIUI (in RevitAPIUI.dll) Version: 21.0.0.0 (21.1.1.109)

Syntax

C#
`public class ComboBoxDropDownOpenedEventArgs : RibbonItemEventArgs`

Visual Basic
`Public Class ComboBoxDropDownOpenedEventArgs _ Inherits RibbonItemEventArgs`

Visual C++
`public ref class ComboBoxDropDownOpenedEventArgs : public RibbonItemEventArgs`

Inheritance Hierarchy

System Object
System EventArgs
Autodesk.Revit.UI.Events RibbonItemEventArgs
Autodesk.Revit.UI.Events ComboBoxDropDownOpenedEventArgs