TextBoxBase.Undo Method ()


Undoes the most recent undo command. In other words, undoes the most recent undo unit on the undo stack.

Namespace:   System.Windows.Controls.Primitives
Assembly:  PresentationFramework (in PresentationFramework.dll)

Public Function Undo As Boolean

Return Value

Type: System.Boolean

true if the undo operation was successful; otherwise, false. This method returns false if the undo stack is empty.

The following example demonstrates how to use the Undo method.

Private Sub undoAction(ByVal sender As Object, ByVal e As RoutedEventArgs)
    If myTextBox.CanUndo = True Then
    Else : Return
    End If
End Sub

.NET Framework
Available since 3.0
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