Nullable<DateTime> date = null;
赋默认值防止报错:
DateTime ? date = new DateTime(3000,1,1);
DateTime date2 = new date.GetValueOrDefault();
Nullable<DateTime> date = null;
赋默认值防止报错:
DateTime ? date = new DateTime(3000,1,1);
DateTime date2 = new date.GetValueOrDefault();