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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)

public bool CanUndo { get; }

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 void undoAction(object sender, RoutedEventArgs e)
{
    if (myTextBox.CanUndo == true)
    {
        myTextBox.Undo();
    }
}


.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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