private void btn_GetTime_Click(object sender, EventArgs e) { lab_time.Text = DateTime.Now.ToString("d") + "/n" +//使用指定格式的字符串变量格式化日期字符串 DateTime.Now.ToString("D") + "/n" + DateTime.Now.ToString("f") + "/n" + DateTime.Now.ToString("F") + "/n" + DateTime.Now.ToString("g") + "/n" + DateTime.Now.ToString("G") + "/n" + DateTime.Now.ToString("R") + "/n" + DateTime.Now.ToString("y") + "/n" + "当前系统时间为:"+DateTime.Now.ToString(//使用自定义格式格式化字符串 "yyyy年MM月dd日 HH时mm分ss秒"); }
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