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我有跟踪 linq 到实体查询,它看起来很适合编译,但是在我运行代码时给了我以下错误。我想得到一个非常复杂的对象,它有一些来自 EDM 模型的派生对象列表。下面类中的列表不是直接来自 EDM 模型,而是来自 EDM 的派生类,为我的问题增加了更多复杂性。这是错误消息。请帮助我解决此查询。我必须在一个 linq 查询中获取我想要的所有数据,这就是我的领导之前要求我的,我对每个组件都有一个查询,我正在添加它们。但铅希望它在一个查询中。请以任何方式帮助我链接或代码片段或任何建议。

LINQ to Entities 无法识别方法 'System.Collections.Generic.List`1[LNI.WSAW.External.StayAtWork.EmployerAddress] ToList[EmployerAddress](System.Collections.Generic.IEnumerable`1[LNI.WSAW.External. StayAtWork.EmployerAddress])' 方法,并且该方法不能转换为商店表达式。

这是代码:

            Dim _requestrecord = (From r In Context.Requests.Include("Claims").Include("Employers").Include("EmployerContacts")
                                 其中 r.RequestId = RequestId AndAlso r.ManualClaimFlag = ManualClaim
            在 Context.Claims 中加入 c r.ClaimId 等于 c.ClaimId where c.ClaimNo.Equals(ClaimNumber)
            在 r.Employer.EmployerId 上的 Context.Employers 中加入 e 等于 e.EmployerId 其中 e.EmplAccntNo.Equals(EmployerAccountNumber)
            在 r.EmployerContactId 上加入 ec.EmployerContacts 等于 ec.EmployerContactId 其中 ec.SawGuid.Equals(EmployerContactGuid)
            使用 { _ 选择新的 RequestRecord()
            .Addresses =(来自在 Context.EmployerAddressTypes
                              在 Context.EmployerAddresses 中加入 ea 在 at.AddressTypeId 等于 ea.EmployerAddressType.AddressTypeId 其中 ea.EmployerId = r.Employer.EmployerId
                              选择带有 { _ 的新 External.StayAtWork.EmployerAddress()
                             .AddressLn1 = ea.AddressLn1,
                             .AddressLn2 = ea.AddressLn2,
                             .AddressLn3 = ea.AddressLn3,
                             .AddressType = at.Description,
                             .BusLocAddressId = ea.BuslocId,
                             .City = ea.City,
                             .Country = ea.Country,
                             .NewSwAddress = ea.NewSwAddressFlag,
                             .State = ea.St,
                             .Zip = ea.Zip,
                             .ZipExt = ea.ZipExt
                             }).ToList(),
            .Employer = New EmployerBaisc() With { _
                .EmployerId = e.EmployerId,
                .EmployerName = e.EmplName
                    },
            .Exspenses = (来自 td In Context.TransactionDates 其中 td.RequestId = RequestId
                              在 Context.ExpenseTransactions 中加入 ex.TransactionDateId 等于 td.TransactionDateId
                              选择 New External.StayAtWork.RequestExpense() With { _
                             .ExpenseAmount = ex.ExpenseAmount,
                             .ExpenseDate = ex.TransactionDate.TransactionDt.ToString(),
                             .ExpenseItem = ex.ExpenseItem,
                             .ExpenseReason = ex.ExpenseReason,
                             .ExpenseType = ex.ExpenseSubTypeId
                             }).ToList(),
            .Wages = (来自 td In Context.TransactionDates 其中 td.RequestId = RequestId
                              加入 wt 在 Context.WageTransactions On wt.TransactionDateId 等于 td.TransactionDateId
                              选择带有 { _ 的新 External.StayAtWork.RequestWage()
                             .DailyWage = wt.DailyWagePaidAmount,
                             .WorkDate = wt.TransactionDate.TransactionDt.ToString(),
                             .WorkHours = wt.WorkHours.ToString()
                             }).ToList(),
            .Timeloss = (来自 ctl In Context.ClaimTimelosses
                              加入 clms 在 Context.Claims On ctl.ClaimId 等于 clms.ClaimId 其中 clms.ClaimId = c.ClaimId
                              选择 New External.StayAtWork.ClaimTimeLoss() With { _
                             .ClaimNo = ctl.Claim.ClaimNo,
                             .FromDate = ctl.FromDt.ToString(),
                             .ToDate = ctl.ToDt.ToString()
                             }).ToList(),
            .Files =(来自 Context.RequestFiles 中的 rfs
                              在 rfs.RequestId 上的 Context.Requests 中加入 reqs 等于 reqs.RequestId 其中 reqs.RequestId = RequestId
                              选择带有 { _ 的新 FileBasic()
                             .FileId = rfs.RequestFileId,
                             .FileName = rfs.FileName,
                             .FromDiv = rfs.FromDiv
                             }).ToList(),
            .UiSettings = (来自 ruis In Context.RequestUis
                              在 ruis.RequestId 上加入 Context.Requests 中的 reqs 等于 reqs.RequestId 其中 reqs.RequestId = RequestId
                              选择 New External.StayAtWork.RequestUI() With { _
                             .ApfByFax = ruis.ApfByFaxFlag,
                             .ApfByMail = ruis.ApfByMailFlag,
                             .ApfLniHas = ruis.ApfLniHasFlag,
                             .ExpenseByFax = ruis.ExpenseByFaxFlag,
                             .ExpenseByMail = ruis.ExpenseByMailFlag,
                             .ExpenseLniHas = ruis.ExpenseLniHasFlag,
                             .JobByFax = ruis.JobByFaxFlag,
                             .JobByLni = ruis.JobByLniFlag,
                             .JobByMail = ruis.JobByMailFlag,
                             .LastDiv = ruis.LastDiv,
                             .requestId = ruis.RequestId,
                             .WageByFax = ruis.WageByFaxFlag,
                             .WageByMail = ruis.WageByMailFlag,
                             .WageLniHas = ruis.WageLniHasFlag
                             }).FirstOrDefault(),
            .Request = New RequestBasic() With { _
                .RequestId = RequestId,
                .Comments = r.Comments,
                .InjuredWorkerName = c.WorkerName,
                .IsFixedSalary = r.FixedSalaryFlag,
                .IsGraveyard = r.GraveyardFlag,
                .IsManualClaim = r.ManualClaimFlag,
                .JobDescriptBeforeInjury = r.JobDescriptBefore,
                .JobDescriptLightDuty = r.JobDescriptLightduty,
                .TrackHoursFlag = r.HoursTrackedFlag
                }
            }).FirstOrDefault()

        Response.ResultData = _requestrecord

这是我必须上的课程: 公共类请求记录

    <DataMember()>
    Public Property Request As RequestBasic

    <DataMember()>
    Public Property Employer As EmployerBaisc

    <DataMember()>
    Public Property Addresses As List(Of EmployerAddress)

    <DataMember()>
    Public Property Timeloss As List(Of ClaimTimeLoss)

    <DataMember()>
    Public Property Wages As List(Of RequestWage)

    <DataMember()>
    Public Property Exspenses As List(Of RequestExpense)

    <DataMember()>
    Public Property Files As List(Of FileBasic)

    <DataMember()>
    Public Property PaidDates As List(Of PaidDate)

    <DataMember()>
    Public Property UiSettings As RequestUI

End Class

提前致谢。

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