c#(asp.net) 如何计算两个日期之间相隔天数
1、
DateTime t1 = Convert.ToDateTime("2006-1-6");
DateTime t2 = Convert.ToDateTime("2006-1-16");
int day=Math.Abs(((TimeSpan)(t1 - t2)).Days);
2、
datediff(day,date1,date2)
3、
DateTime oldDate = new DateTime(2002,7,15);
DateTime newDate = DateTime.Now;
// Difference in days, hours, and minutes.
TimeSpan ts = newDate - oldDate;
// Difference in days.
int differenceInDays = ts.Days;
Console.WriteLine("Difference in days: {0} ", differenceInDays);
原文地址：https://blog.csdn.net/weixin_53720617/article/details/143487715
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