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TextBoxBase.Undo Method

Undoes the most recent undo command. In other words, undoes the most recent undo unit on the undo stack.

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

public bool Undo ()
public boolean Undo ()
public function Undo () : boolean
You cannot use methods in XAML.

Return Value

true if the undo operation was successful; otherwise, false. This method returns false if the undo stack is empty.

The following example demonstrates how to use the Undo method.

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

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0
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