string weekstr = DateTime.Now.DayOfWeek.ToString(); switch (weekstr) { 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; }