TextBoxBase.IsUndoEnabled Property

Reference

Definition

Namespace:: System.Windows.Controls.Primitives

Assembly:: PresentationFramework.dll

Important

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Gets or sets a value that indicates whether undo support is enabled for the text-editing control.

public:
 property bool IsUndoEnabled { bool get(); void set(bool value); };

public bool IsUndoEnabled { get; set; }

member this.IsUndoEnabled : bool with get, set

Public Property IsUndoEnabled As Boolean

Property Value

Boolean

true if undo support is enabled; otherwise, false. The default value is true.

Examples

The following example demonstrates how to use the IsUndoEnabled property in Extensible Application Markup Language (XAML).

XAML

<TextBox TextWrapping="Wrap"
         Name="myTextBox" 
         Width="500" 
         Height="200" 
         AcceptsReturn="True"
         IsUndoEnabled="True"
         VerticalScrollBarVisibility="Visible"
         HorizontalScrollBarVisibility="Auto" 
         Margin="25">

Remarks

Setting this property to false clears the undo stack. Therefore, if you disable undo and then re-enable it, undo commands still do not work because the undo stack was emptied when you disabled undo.

Dependency Property Information

Item	Value
Identifier field	IsUndoEnabledProperty
Metadata properties set to `true`	None

Applies to

Product	Versions
.NET Framework	3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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