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下列程式可算出以今天為準的話,7天前是星期幾
DateTime PastDate=new DateTime();
PastDate = DateTime.Now;
TimeSpan ts = new TimeSpan(7,0,0,0);
PastDate = PastDate.Subtract(ts);
PastDate.ToShortDateString();
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下列程式可算出以今天為準的話,7天前是星期幾
DateTime PastDate=new DateTime();
PastDate = DateTime.Now;
TimeSpan ts = new TimeSpan(7,0,0,0);
PastDate = PastDate.Subtract(ts);
PastDate.ToShortDateString();