日期:2014-05-18 浏览次数:21993 次
 DateTime dt1 = DateTime.Now;
                DateTime dt2 = DateTime.Now.AddHours(-3).AddDays(-1);
                TimeSpan ts = dt1.Subtract(dt2);
                double hours = ts.TotalHours;//27.0
------解决方案--------------------
 DateTime a = DateTime.Now;
 DateTime b = a.AddHours(5);
 int c =(b - a).Hours;