WPF ListBoxItem双击、单击事件分别处理

　　　　 private void listBox_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {            
            var element = (FrameworkElement)sender;
            if (e.ClickCount == 1)
            {
                var timer = new System.Timers.Timer(500);
                timer.AutoReset = false;
                timer.Elapsed += new ElapsedEventHandler((o, ex) => element.Dispatcher.Invoke(new Action(() =>
                {
                    var timer2 = (System.Timers.Timer)element.Tag;
                    timer2.Stop();
                    timer2.Dispose();
                    UIElement_Click(element, e);
                })));
                timer.Start();
                element.Tag = timer;
            }
            if (e.ClickCount > 1)
            {
                var timer = element.Tag as System.Timers.Timer;
                if (timer != null)
                {
                    timer.Stop();
                    timer.Dispose();
                    UIElement_DoubleClick(sender, e);
                }
            }
        }

        private void UIElement_Click(object sender, MouseButtonEventArgs e)
        {
            
        }

        private void UIElement_DoubleClick(object sender, MouseButtonEventArgs e)
        {
            
        }