如何在使用attached-behaviors单击按钮后短时间显示ToolTip？

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Threading;

public static class ButtonAttachedBehavior
{
    public static readonly DependencyProperty ShowToolTipOnClickProperty =
        DependencyProperty.RegisterAttached("ShowToolTipOnClick", typeof(bool), typeof(ButtonAttachedBehavior),
            new PropertyMetadata(false, OnShowToolTipOnClickChanged));

    public static bool GetShowToolTipOnClick(DependencyObject obj)
    {
        return (bool)obj.GetValue(ShowToolTipOnClickProperty);
    }

    public static void SetShowToolTipOnClick(DependencyObject obj, bool value)
    {
        obj.SetValue(ShowToolTipOnClickProperty, value);
    }

    private static void OnShowToolTipOnClickChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var button = d as ButtonBase;
        if (button == null)
            return;

        if ((bool)e.NewValue)
        {
            button.Click += Button_Click;
        }
        else
        {
            button.Click -= Button_Click;
        }
    }

    private static void Button_Click(object sender, RoutedEventArgs e)
    {
        var button = (ButtonBase)sender;
        var toolTip = new ToolTip();

        // 设置ToolTip的内容
        toolTip.Content = "这是一个ToolTip";

        // 显示ToolTip
        button.ToolTip = toolTip;
        toolTip.IsOpen = true;

        // 启动定时器，5秒后隐藏ToolTip
        var timer = new DispatcherTimer();
        timer.Interval = TimeSpan.FromSeconds(5);
        timer.Tick += (s, args) =>
        {
            toolTip.IsOpen = false;
            timer.Stop();
        };
        timer.Start();
    }
}

<Button Content="点击我显示ToolTip"
        local:ButtonAttachedBehavior.ShowToolTipOnClick="True" />