我在我的ASP.Net MVC應用程序中使用EF6。對於特定的表格，我的視圖，更新和刪除代碼可以工作，但是我的插入引發了一個DbUpdateException。實體框架6 - 使用自動編號ID創建記錄拋出DbUpdateException
System.Data.Entity.Infrastructure.DbUpdateException了未處理由用戶代碼
的HResult = -2146233087
消息=無法確定相關的操作的有效順序。由於外鍵約束，模型要求或商店生成的值，可能會存在依存關係。
源=的EntityFramework
堆棧跟蹤：
在System.Data.Entity.Internal.InternalContext.SaveChanges（） 在SupportDiary.Models.SchedulerRequestService.Insert（WRequestViewModel請求）在C：\項目\ SupportDiary \ SupportDiary \模型\ SchedulerRequestService.vb：第92行 at SupportDiary.Hubs.WRequestHub.Create（WRequestViewModel request）in C：\ Projects \ SupportDiary \ SupportDiary \ Hubs \ WRequestHub.vb：line 37 at lambda_method（Closure，IHub，Object []） 在Microsoft.AspNet.SignalR.Hubs.HubDispatcher.Incoming（IHubIncomingInvokerContext上下文） InnerException： HResult = -2146233087 M essage =無法確定依賴操作的有效順序。由於外鍵約束，模型要求或商店生成的值，可能會存在依存關係。 源=的EntityFramework 堆棧跟蹤： 在System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.DependencyOrderingError（IEnumerable的1 remainder) at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.ProduceCommands() at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.Update() at System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func1 FUNC，IDbExecutionStrategy executionStrategy，布爾startLocalTransaction，布爾releaseConnectionOnSuccess） 在System.Data.Entity.Core .Objects.ObjectContext.SaveChangesToStore（SaveOptions options，IDbExecutionStrategy executionStrategy，Boolean startLocalTransaction） at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute [TResult]（Func`1 operation） at System.Data.Entity.Core.Objects。 ObjectContext.SaveChangesInternal（SaveOptions選項，布爾executeInExistingTransaction） at System.Data.Entity.Internal.InternalContext.SaveChanges（） InnerException：
這是插入和更新的代碼......正如我所說的更新工作。
Public Overridable Function Insert(request As WRequestViewModel) As WRequestViewModel
Dim entity As New tWorkRequest()
entity.Start = request.Start
entity.[End] = request.[End]
entity.Title = request.Title
entity.Diary = request.Diary
entity.Team = request.Team
entity.WorkManagerID = request.WorkManagerID
entity.AssigneeID = request.AssigneeID
entity.ChangeRef = request.ChangeRef
entity.Description = request.Description
entity.ImpactedServers = request.ImpactedServers
entity.ImpactedServices = request.ImpactedServices
entity.IsBAU = request.IsBAU
entity.ProjectRef = request.ProjectRef
entity.Notes = request.Notes
entity.IsOOH = request.IsOOH
entity.IsAllDay = request.IsAllDay
entity.RecurrenceRule = request.RecurrenceRule
entity.RecurrenceID = request.RecurrenceID
entity.RecurrenceException = request.RecurrenceException
entity.StartTimezone = request.StartTimezone
entity.EndTimezone = request.EndTimezone
entity.RequestStatus = request.RequestStatus
Using de As New SupportDiaryEntities
de.tWorkRequests.Add(entity)
de.SaveChanges()
request.WRequestID = entity.WRequestID
Return request
End Using
End Function
Public Overridable Sub Update(request As WRequestViewModel)
Using de As New SupportDiaryEntities
Dim entity = de.tWorkRequests.FirstOrDefault(Function(r) r.WRequestID = request.WRequestID)
entity.Start = request.Start
entity.[End] = request.[End]
entity.Title = request.Title
entity.Diary = request.Diary
entity.Team = request.Team
entity.WorkManagerID = request.WorkManagerID
entity.AssigneeID = request.AssigneeID
entity.ChangeRef = request.ChangeRef
entity.Description = request.Description
entity.ImpactedServers = request.ImpactedServers
entity.ImpactedServices = request.ImpactedServices
entity.IsBAU = request.IsBAU
entity.ProjectRef = request.ProjectRef
entity.Notes = request.Notes
entity.IsOOH = request.IsOOH
entity.IsAllDay = request.IsAllDay
entity.RecurrenceRule = request.RecurrenceRule
entity.RecurrenceID = request.RecurrenceID
entity.RecurrenceException = request.RecurrenceException
entity.StartTimezone = request.StartTimezone
entity.EndTimezone = request.EndTimezone
entity.RequestStatus = request.RequestStatus
de.SaveChanges()
End Using
End Sub
如果我鑽到實體中插入代碼，它的自動編號ID字段（WRequestId）設置爲0
我不知道如何解決這個問題...搜索上線給有關與DatabaseGeneratedOption.Identity有關的錯誤的詳細信息，但這看起來像是EF4中的一個錯誤。但是我確實檢查了我的edmx文件，並且在每個表的所有ID字段中都正確設置了此參數。
這是有問題的表EF自動生成的文件...
'------------------------------------------------------------------------------
' <auto-generated>
' This code was generated from a template.
'
' Manual changes to this file may cause unexpected behavior in your application.
' Manual changes to this file will be overwritten if the code is regenerated.
' </auto-generated>
'------------------------------------------------------------------------------
Imports System
Imports System.Collections.Generic
Partial Public Class tWorkRequest
Public Property WRequestID As Integer
Public Property Title As String
Public Property Start As Date
Public Property [End] As Date
Public Property Diary As String
Public Property Team As String
Public Property WorkManagerID As Integer
Public Property AssigneeID As Integer
Public Property ChangeRef As String
Public Property Description As String
Public Property ImpactedServers As String
Public Property ImpactedServices As String
Public Property IsBAU As Boolean
Public Property ProjectRef As String
Public Property Notes As String
Public Property IsOOH As Boolean
Public Property IsAllDay As Boolean
Public Property RecurrenceRule As String
Public Property RecurrenceID As Nullable(Of Integer)
Public Property RecurrenceException As String
Public Property StartTimezone As String
Public Property EndTimezone As String
Public Property RequestStatus As Integer
Public Overridable Property tWorkRequests1 As ICollection(Of tWorkRequest) = New HashSet(Of tWorkRequest)
Public Overridable Property tWorkRequest1 As tWorkRequest
End Class
任何建議任何人嗎？
看看這個解決方案http://stackoverflow.com/questions/14153208/unable-to-determine-a-valid-ordering-for-dependent-operations – ssanga