TextBoxBase.IsUndoEnabled Property

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

Namespace:  System.Windows.Controls.Primitives
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

public bool IsUndoEnabled { get; set; }
<object IsUndoEnabled="bool" .../>

Property Value

Type: System.Boolean
true to enable undo support; otherwise, false. The default value is true.

Identifier field

IsUndoEnabledProperty

Metadata properties set to true

None

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

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

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

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0
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