Action a = () =>            {                i += 1;                var timer = new System.Timers.Timer(800) { Interval = 600 };               timer.Elapsed += (sender, e) =>                {                   timer.Enabled = false;                    i = 0;                };                timer.Enabled = true;                if (i % 2 == 0)                {                    i=0;                    timer.Enabled = false;                  //你的代码                }            };            name_headChatWin.Dispatcher.Invoke(a);