C#：日期大小的比较，两个日期间的循环遍历

//两个DateTime比较
DateTime.Compare(dt1, dt2)==0//dt1=dt2
DateTime.Compare(dt1, dt2)>0//dt1>dt2
DateTime.Compare(dt1, dt2)<0//dt1<dt2

//两个日期间逐一遍历
StartDate="2018-09-01"
StartDate="2018-09-30"

DateTime dt1 = DateTime.Parse(StartDate);
DateTime dt2 = DateTime.Parse(EndDate);
while (DateTime.Compare(dt1, dt2) <= 0)
{
	dt1 = dt1.AddDays(1);
}