Question

我有这个方法

public static List<SummaryItinerary> ReturnBookingsByUserGuid(Guid userGuid)
         {
             var entities = new gHOPEntities();
             var results = from itinerary in entities.Itinerary
                          where itinerary.UserGuid == userGuid
                          where itinerary.Booking
                          select new SummaryItinerary()
                                     {
                                         TourTitle = itinerary.Tours.Title,
                                         TourId = itinerary.Tours.TourId,
                                         TourSEOName =
itinerary.Tours.SEOName,
                                         DepartureDate =
itinerary.DepartureDate,
                                         Passengers = itinerary.Passengers,
                                         Nights = itinerary.Nights,
                                         GrandTotal = itinerary.GrandTotal,
                                         AmountPaid = itinerary.AmountPaid,
                                         CreationDate =
itinerary.CreationDate
                                     };
             var summaryItineraryList = new List<SummaryItinerary>();

             foreach(var summaryItinerary in results)
             {
                 summaryItineraryList.Add(summaryItinerary);
             }

             return summaryItineraryList.OrderByDescending(i =>
i.CreationDate).ToList();
         }

当我调用它时，此方法失败。返回超时错误。但是，当我在for循环中放置断点时，它会通过。为什么会这样？

谢谢，

萨钦

Answer 1

这是循环中的问题：

foreach(var summaryItinerary in results)

在它查看数据库的每个元素上。这是可枚举的，因此访问是通过每个元素进行的，每个元素迭代都会检查数据库。为避免这样做：

var tmp = results.ToList();
foreach(var summaryItinerary in tmp)

实体框架超时错误

1 个答案: