我是WPF的初学者，在我的应用程序中我使用datatable作为WPF datagrid的itemsource，这个数据表由多个线程更新（使用lock（datatable）同时更新数据表，Exception不一致（不是每次都是我运行程序），我搜索了很多，但没有一个答案帮助我找到异常的原因或解决它。
内部例外：
{＆＃34;开发人员的信息（使用Text Visualizer阅读）：
抛出此异常是因为用于控制的生成器System.Windows.Controls.DataGrid Items.Count：3＆＃39;名称＆＃39; TraceGridView＆＃39;已收到与Calendar集合的当前状态不一致的CollectionChanged事件序列。
检测到以下差异：累计计数2与实际计数3不同。
[累计次数为（最后一次重置时计数+ #Adds - 自上次重置后#Removes）。]
以下一个或多个来源可能引发了错误的事件：
System.Windows.Controls.ItemContainerGenerator
System.Windows.Controls.ItemCollection
System.Windows.Data.BindingListCollectionView
System.Data.DataView
（已加星标的来源被认为更有可能是问题的原因。）
最常见的原因是（a）更改集合或其计数而不引发相应的事件，
（b）使用不正确的索引或项目参数引发事件。
异常的堆栈跟踪描述了如何检测到不一致，而不是它们是如何发生的。
要获得更及时的例外，请设置附加属性＆＃39; PresentationTraceSources.TraceLevel＆＃39;在发电机上重视＆＃39;高＆＃39;并重新运行该方案。
执行此操作的一种方法是运行类似于以下内容的命令：
立即窗口中的System.Diagnostics.PresentationTraceSources.SetTraceLevel（myItemsControl.ItemContainerGenerator，System.Diagnostics.PresentationTraceLevel.High）。
这会导致检测逻辑在每个CollectionChanged事件之后运行，因此会降低应用程序的速度。＆＃34;}
堆栈追踪：
at System.Windows.Controls.ItemContainerGenerator.Verify()
at
System.Windows.Controls.VirtualizingStackPanel.MeasureChild(IItemContainerGenerator& generator, IContainItemStorage& itemStorageProvider, IContainItemStorage& parentItemStorageProvider, Object& parentItem, Boolean& hasUniformOrAverageContainerSizeBeenSet, Double& computedUniformOrAverageContainerSize, Boolean& computedAreContainersUniformlySized, IList& items, Object& item, IList& children, Int32& childIndex, Boolean& visualOrderChanged, Boolean& isHorizontal, Size& childConstraint, Rect& viewport, VirtualizationCacheLength& cacheSize, VirtualizationCacheLengthUnit& cacheUnit, Boolean& foundFirstItemInViewport, Double& firstItemInViewportOffset, Size& stackPixelSize, Size& stackPixelSizeInViewport, Size& stackPixelSizeInCacheBeforeViewport, Size& stackPixelSizeInCacheAfterViewport, Size& stackLogicalSize, Size& stackLogicalSizeInViewport, Size& stackLogicalSizeInCacheBeforeViewport, Size& stackLogicalSizeInCacheAfterViewport, Boolean& mustDisableVirtualization, Boolean isBeforeFirstItem, Boolean isAfterFirstItem, Boolean isAfterLastItem, Boolean skipActualMeasure, Boolean skipGeneration, Boolean& hasBringIntoViewContainerBeenMeasured, Boolean& hasVirtualizingChildren)
at System.Windows.Controls.VirtualizingStackPanel.MeasureOverrideImpl(Size constraint, Nullable`1& lastPageSafeOffset, List`1& previouslyMeasuredOffsets, Boolean remeasure)
at System.Windows.Controls.VirtualizingStackPanel.MeasureOverride(Size constraint)
at System.Windows.Controls.Primitives.DataGridRowsPresenter.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.ContextLayoutManager.UpdateLayout()
at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()
at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
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.DispatcherOperation.InvokeImpl()
at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Threading.DispatcherOperation.Invoke()
at System.Windows.Threading.Dispatcher.ProcessQueue()
at System.Windows.Threading.Dispatcher.WndProcHook(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.LegacyInvokeImpl(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 GUI_WPF_.App.Main() in d:\work\CANTrackRepo2\GUI(WPF)\obj\Release\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.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
以下是我更新DataGrid的代码：
private void UpdateDataGridView(DataTable dt)
{
if (this.TraceGridView.Dispatcher.CheckAccess())
{
this.Dispatcher.BeginInvoke((Action)(() =>
{
this.TraceGridView.ItemsSource = dt.DefaultView;
this.TraceGridView.Items.Refresh();
}));
}
else
{
SetUpdateTraceDataGridCallBack d = new SetUpdateTraceDataGridCallBack(UpdateDataGridView);
this.Dispatcher.BeginInvoke(d, new object[] { dt });
}
}