C#中DateTime一些用法的总结

string t1 = "2019-1-1 00:00:00";
string t2 = "2019-1-2 18:00:00";
DateTime t11 = DateTime.Parse(t1);
DateTime t22 = DateTime.Parse(t2);

时间相差多少：

Double sp = t22.Subtract(t11).TotalDays; 　　t22和t11相差天数结果：1.75天

时间加上多少：

DateTime t = t11.AddSeconds(86400);　　加上86400秒，结果：2019-1-2 00:00:00

转载于:https://www.cnblogs.com/CarryYou-lky/p/10973624.html