Page <-> PagePage <-> Page
的多对多关系表示。
问题是,我只是无法插入包含关系的新实体。我尝试的最后一件事是:
Page page = new Page()
{
Id = Guid.NewGuid(),
Title = "New Page",
Created = DateTime.Now,
LastChanged = DateTime.Now,
IsRedirected = false,
Position = 0,
Html = "Add your HTML here.",
Parent = { parent }
};
this.Context.AddToPages(page);
this.Context.AddLink(parent, "Children", page);
parent.Children.Add(page);
this.Context.SaveChanges();
我想不出任何其他的尝试。有没有人破解过这个?
编辑1 :这是数据库图表中的图片:
编辑2 :异常详细信息:
System.Data.Services.Client.DataServiceRequestException was unhandled
Message=An error occurred while processing this request.
Source=System.Data.Services.Client
StackTrace:
at System.Data.Services.Client.DataServiceContext.SaveResult.HandleBatchResponse()
at System.Data.Services.Client.DataServiceContext.SaveResult.EndRequest()
at System.Data.Services.Client.DataServiceContext.SaveChanges(SaveChangesOptions options)
at System.Data.Services.Client.DataServiceContext.SaveChanges()
at PortfolioManagementConsole.Models.PageViewModel.SaveChanges(Object parameter) in C:\Users\Daniel\documents\visual studio 2010\Projects\PortfolioManagementService\PortfolioManagementConsole\Models\PageViewModel.cs:line 59
at PortfolioManagementConsole.Common.RelayCommand.Execute(Object parameter) in C:\Users\Daniel\documents\visual studio 2010\Projects\PortfolioManagementService\PortfolioManagementConsole\Common\RelayCommand.cs:line 52
at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
at System.Windows.Controls.Primitives.ButtonBase.OnClick()
at System.Windows.Controls.Button.OnClick()
at Telerik.Windows.Controls.RadButton.OnClick() in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\Buttons\RadButton.cs:line 348
at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.Run()
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run(Window window)
at System.Windows.Application.Run()
at PortfolioManagementConsole.App.Main() in C:\Users\Daniel\documents\visual studio 2010\Projects\PortfolioManagementService\PortfolioManagementConsole\obj\x86\Debug\App.g.cs:line 0
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: System.Data.Services.Client.DataServiceClientException
Message=<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<error xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<code></code>
<message xml:lang="de-CH">An error occurred while processing this request.</message>
</error>
Source=System.Data.Services.Client
StatusCode=500
StackTrace:
at System.Data.Services.Client.DataServiceContext.SaveResult.<HandleBatchResponse>d__1e.MoveNext()
InnerException:
答案 0 :(得分:0)
您的WCF数据服务服务器未返回详细的错误消息,并且无法帮助您确定从服务器返回的确切错误消息。请按照以下说明从服务器启用详细错误消息: http://blogs.msdn.com/b/phaniraj/archive/2008/06/18/debugging-ado-net-data-services.aspx。 启用此功能后,您应该能够看到服务器抛出的错误消息。
从查看您的模型,您需要从孩子回到父母的另一个链接。 将此行添加到SaveChanges:
之前的代码中this.Context.SetLink(page,“Parent”,parent);
为了更好地理解这一点,以下是我博客上的一些链接,其中详细介绍了如何使用WCF数据服务客户端与协会合作:
1到多个协会
1对1关联