Undo Method (ColumnGroupHeaderExpandUndoAction)

Undoes the action on the specified sender.

Syntax

'Declaration
 
Public Function Undo( _
   ByVal sender As System.Object _
) As System.Boolean

'Usage
 
Dim instance As ColumnGroupHeaderExpandUndoAction
Dim sender As System.Object
Dim value As System.Boolean
 
value = instance.Undo(sender)

public System.bool Undo( 
   System.object sender
)

true if undo is successful; otherwise, false.