The base class of the RibbonItem event arguments which have UIApplication property.
Namespace: Autodesk.Revit.UI.Events
Assembly: RevitAPIUI (in RevitAPIUI.dll) Version: 18.0.0.0 (18.0.0.420)
Syntax
Inheritance Hierarchy
System..::..Object
System..::..EventArgs
Autodesk.Revit.UI.Events..::..RibbonItemEventArgs
Autodesk.Revit.UI.Events..::..ComboBoxCurrentChangedEventArgs
Autodesk.Revit.UI.Events..::..ComboBoxDropDownClosedEventArgs
Autodesk.Revit.UI.Events..::..ComboBoxDropDownOpenedEventArgs
Autodesk.Revit.UI.Events..::..TextBoxEnterPressedEventArgs
System..::..EventArgs
Autodesk.Revit.UI.Events..::..RibbonItemEventArgs
Autodesk.Revit.UI.Events..::..ComboBoxCurrentChangedEventArgs
Autodesk.Revit.UI.Events..::..ComboBoxDropDownClosedEventArgs
Autodesk.Revit.UI.Events..::..ComboBoxDropDownOpenedEventArgs
Autodesk.Revit.UI.Events..::..TextBoxEnterPressedEventArgs