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//So first select your data
var data= (from item in entities.itemsSet).ToList();
//Then filter
var filtered = from item in data
where Convert.ToDateTime(shift.starttime) >= startDate
&& Convert.ToDateTime(shift.endtime) < endDate
select item;
以上代码来自:
http://stackoverflow.com/questions/2555927/linq-to-entities-datetime-conversion
string input = "131203 0510";
DateTime result = DateTime.ParseExact(input, "yyMMdd hhmm", null);