在我们的应用程序中，我通过允许键绑定事件冒泡到主窗口视图来处理键绑定，在主窗口视图中，键绑定是在xaml中定义的，并在主窗口视图模型中处理，例如，

<Window.InputBindings>
    <KeyBinding Key="Left" Modifiers="Alt" Command="{Binding NavigateBackCommand}"/>
    <KeyBinding Key="Right" Modifiers="Alt" Command="{Binding NavigateForwardCommand}"/>
    <KeyBinding Key="c" Modifiers="Control" Command="{Binding CopyCommand}"/>
    <KeyBinding Key="v" Modifiers="Control" Command="{Binding PasteCommand}"/>
    <KeyBinding Key="d" Modifiers="Control" Command="{Binding DuplicateCommand}"/>
    <KeyBinding Key="n" Modifiers="Control" Command="{Binding AddCommand}"/>
    <KeyBinding Key="i" Modifiers="Control" Command="{Binding ImportCommand}"/>
    <KeyBinding Key="e" Modifiers="Control" Command="{Binding ExportCommand}"/>
    <KeyBinding Key="a" Modifiers="Control" Command="{Binding SelectAllCommand}"/>
    <KeyBinding Key="k" Modifiers="Control" Command="{Binding DeselectCommand}"/>
    <KeyBinding Key="z" Modifiers="Control" Command="{Binding UndoCommand}"/>
    <KeyBinding Key="y" Modifiers="Control" Command="{Binding RedoCommand}"/>
    <KeyBinding Key="z" Modifiers="Control+Shift" Command="{Binding RedoCommand}"/>
    <KeyBinding Key="F5" Command="{Binding RefreshCommand}"/>
    <KeyBinding Key="Delete" Command="{Binding DeleteCommand}"/>
    <KeyBinding Key="Escape" Command="{Binding EscapeCommand}"/>
</Window.InputBindings>

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这很好用，除了TextBox控件，在那里撤销事件（“Ctrl+Z”）从来没有出现冒泡到主窗口。我已经在TextBox上设置了IsUndoEnabled为false，但它仍然没有出现冒泡。这几乎就像TextBox正在处理事件，从而防止它冒泡。
我已经在自定义TextBox（MyTextBox）中使用以下方法进行了修复，即在控件中侦听CommandBinding，并在窗口中查找KeyBinding并执行相关命令

public MyTextBox()
{
    IsUndoEnabled = false;

    CommandBindings.Add(new CommandBinding(
        ApplicationCommands.Undo,
        ((sender, args) =>
        {
            var window = Window.GetWindow(this);

            foreach (var keyBinding in window.InputBindings.OfType<KeyBinding>())
            {
                if (keyBinding.Key == Key.Y && keyBinding.Modifiers == ModifierKeys.Control)
                {
                    keyBinding.Command.Execute(null);
                }
            }
        })));
 }

型
但是这看起来很奇怪，有没有办法禁用TextBox内置的撤销命令，而让键绑定冒泡，这样我就可以处理它了？