Datetime dt1=new datetime()
dt1=DateTime.parse("2005-5-6");
Datetime dt2=new datetime()
dt2=DateTime.parse("2004-6-9");
TimeSpan ts=dt1.substract(dt2);
MessageBox.show(ts.totaldays.tostring());
转载于:https://www.cnblogs.com/tonyman/archive/2007/04/12/710319.html