WPF禁用輸入框的複製、剪切、粘貼功能

<TextBox>
    <TextBox.CommandBindings>
        <CommandBinding Command="ApplicationCommands.Paste" CanExecute="CommandCanExecute"></CommandBinding>
        <CommandBinding Command="ApplicationCommands.Cut" CanExecute="CommandCanExecute"></CommandBinding>
        <CommandBinding Command="ApplicationCommands.Copy" CanExecute="CommandCanExecute"></CommandBinding>
    </TextBox.CommandBindings>
</TextBox>


private void CommandCanExecute(object sender, CanExecuteRoutedEventArgs e)
{
    e.CanExecute = false;
    e.Handled = true;
}