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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: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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