在MouseButtonDowm事件中模仿鼠标双击

int i = 0;
        void item_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            i += 1;
            DispatcherTimer timer = new DispatcherTimer();
            timer.Interval = new TimeSpan(0, 0, 0, 0, 300);
            timer.Tick += (s, e1) =>
            {
                timer.IsEnabled = false;
                i = 0;
            };
            timer.IsEnabled = true;
            if (i % 2 == 0)
            {
                timer.IsEnabled = false;
                i = 0;
                //内容代码位置                           
        }
        }