Try this way
List <content>= dbcontext.content.ToList().Where(u =>(Convert.ToDateTime(u.Date).Month==M_no) || (Convert.ToDateTime(u.Date).Year==year_no) || (Convert.ToDateTime(u.Date).Day==day_no)).ToList();
</content>
example will demonstrate the properties .
System.DateTime moment = new System.DateTime(2000, 1, 15, 3, 57, 32, 11);
// Year gets 2000.
int year = moment.Year;
// Month gets 1 (January).
int month = moment.Month;
// Day gets 15.
int day = moment.Day;
thanks