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CanUndo Property

TextBoxBase.CanUndo Property

Gets a value that indicates whether the most recent action can be undone.

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

'Declaration
Public ReadOnly Property CanUndo As Boolean

Property Value

Type: System.Boolean
true if the most recent action can be undone; otherwise, false.
This property has no default value.

The following code example demonstrates how to use the CanUndo property to determine whether the most recent action can be undone.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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