TextBoxBase.Undo Method

Definition

Namespace:

System.Windows.Controls.Primitives

Assembly:

PresentationFramework.dll

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

C#

public bool Undo();

Returns

Boolean

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

Examples

The following example demonstrates how to use the Undo method.

C#

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

Applies to

See also

• Redo()
• BeginChange()
• EndChange()
• DeclareChangeBlock()
• LockCurrentUndoUnit()