C#WinForm中显示实时时间：年/月/日 时/分/秒 星期X

      //加载窗体时
        string weekstr = "";
        private void Form22_Load(object sender, EventArgs e)
        {
            this.timer1.Start();   
            //把得到的星期转换成中文
            switch (DateTime.Now.DayOfWeek.ToString())
            {
                case "Monday": weekstr = "星期一"; break;
                case "Tuesday": weekstr = "星期二"; break;
                case "Wednesday": weekstr = "星期三"; break;
                case "Thursday": weekstr = "星期四"; break;
                case "Friday": weekstr = "星期五"; break;
                case "Saturday": weekstr = "星期六"; break;
                case "Sunday": weekstr = "星期日"; break;
            }
        }

        //定时器timer
        private void timer1_Tick(object sender, EventArgs e)
        {
             label2.Text = "当前时间:" + DateTime.Now.ToString() + " " + weekstr;
        }    
【注】拖控件timer在窗体，并设置Enable为true，Interval为1000（1秒）