When working with
DateTime.Now, you should always store it in a local variable otherwise you can get really nasty bugs from the clock changing between calls:
var now = DateTime.Now; var query = from v in dc.VisitorInfors where v.VisitTime.Date == now.Date select v;
DateTime currentDate = DateTime.Now; var query = from v in dc. VisitorInfors where v.VisitTime == currentDate.Date select v;
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