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发布时间:2015-01-13 作者:网络 阅读:387次


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); 
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