Visual Basic (Declaration)
Visual Basic (Usage)
C#

Undoes the action.

Syntax

Visual Basic (Declaration)
Public MustOverride Function Undo( _ ByVal sender As Object _ ) As Boolean

Visual Basic (Usage)	Copy Code
`Dim instance As UndoAction Dim sender As Object Dim value As Boolean value = instance.Undo(sender)`

C#
public abstract bool Undo( object sender )

Boolean: true if successful; false otherwise

Remarks

If sender is a SpreadView object, it will be used to fire events during the operation.