c# - System.InvalidOperationException：ItemsControl 与其项目源不一致

问题描述

我在下面收到以下异常

要知道的事情：
-我研究了这个异常，发现所有对它的引用都涉及使用线程的人----我没有使用线程，我的应用程序是普通的单线程和线性的。- 我发现的建议答案是使用 Dispatcher 和 BeginInvoke() 方法。我不使用那些。它们与我的代码无关。-我正在使用 MVVM。根据错误，这个对象列表在我的视图模型中引发了错误

  private List<curve> curves{get;set;}

这是 .net4.5 的错误吗？可能是什么原因造成的，我该如何解决？

任何帮助表示赞赏。谢谢。

--------------------------异常/堆栈跟踪-------- --

System.InvalidOperationException：ItemsControl 与其项目源不一致。有关更多信息，请参阅内部异常。---> System.Exception：面向开发人员的信息（使用文本可视化工具阅读此内容）：引发此异常是因为控件“System.Windows.Controls.DataGrid Items.Count:0”的生成器名称为“（未命名）”已收到与 Items 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 0 与实际计数 9 不同。[累计计数为（上次重置时的计数 + #Adds - 自上次重置以来的 #Removes）。]

以下一个或多个来源可能引发了错误事件： System.Windows.Controls.ItemContainerGenerator System.Windows.Controls.ItemCollection System.Windows.Data.ListCollectionView System.Collections.Generic.List`1[[AI.ClientHousingUtilities. Module.Models.curve, AI.ClientHousingUtilities.Module, Version=1.24.0.20239, Culture=neutral, PublicKeyToken=null]] （加星标的来源被认为更可能是问题的原因。）

最常见的原因是 (a) 在不引发相应事件的情况下更改集合或其计数，以及 (b) 引发具有不正确索引或项目参数的事件。

异常的堆栈跟踪描述了不一致是如何被检测到的，而不是它们是如何发生的。要获得更及时的异常，请将生成器上的附加属性“PresentationTraceSources.TraceLevel”设置为值“High”并重新运行场景。一种方法是运行类似于以下内容的命令：
System.Diagnostics.PresentationTraceSources.SetTraceLevel(myItemsControl.ItemContainerGenerator, System.Diagnostics.PresentationTraceLevel.High) 从即时窗口。这会导致检测逻辑在每个 CollectionChanged 事件之后运行，因此会减慢应用程序的速度。

--- 内部异常堆栈跟踪结束 --- System.Windows.Controls.ItemContainerGenerator.Verify() at System.Windows.Controls.VirtualizingStackPanel.MeasureChild(IItemContainerGenerator& generator, IContainItemStorage& itemStorageProvider, IContainItemStorage& parentItemStorageProvider, Object& parentItem, Boolean& hasUniformOrAverageContainerSizeBeenSet, Double& computedUniformOrAverageContainerSize, Double& computedUniformOrAverageContainerPixelSize, Boolean& computedAreContainersUniformlySized, Boolean& hasAnyContainerSpanChanged, 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) 在 System.Windows.Controls.VirtualizingStackPanel.MeasureOverrideImpl (Size constraint, NullableBoolean& 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) 在 System.Windows.Controls.VirtualizingStackPanel.MeasureOverrideImpl (Size constraint, NullableBoolean& 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) 在 System.Windows.Controls.VirtualizingStackPanel.MeasureOverrideImpl (Size constraint, NullableSize& 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（大小约束，NullableSize& 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（大小约束，NullableSize& 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,可空的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,可空的System.Windows.Controls.VirtualizingStackPanel.MeasureOverrideImpl 处的布尔 skipGeneration、Boolean& hasBringIntoViewContainerBeenMeasured、Boolean& hasVirtualizingChildren)System.Windows.Controls.VirtualizingStackPanel.MeasureOverrideImpl 处的布尔 skipGeneration、Boolean& hasBringIntoViewContainerBeenMeasured、Boolean& hasVirtualizingChildren)1& lastPageSafeOffset, ListSystem.Windows.Controls.Primitives.DataGridRowsPresenter.MeasureOverride(Size constraint) at System.Windows.Controls.VirtualizingStackPanel.MeasureOverride(Size constraint) at System.Windows.Controls.VirtualizingStackPanel.MeasureOverride(Size constraint) 的 1&previousMeasuredOffsets, Nullable`1&lastPagePixelSize, Boolean remeasure) System.Windows.FrameworkElement.MeasureCore(大小 availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.ContextLayoutManager.UpdateLayout() 在 System.Windows.UIElement.UpdateLayout() 在 System.Windows.Controls.VirtualizingStackPanel.<>c__DisplayClass94_0.b__0( ) 在 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) 在 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs,委托 catchHandler)

标签： c#wpf

c# - System.InvalidOperationException：ItemsControl 与其项目源不一致

问题描述

解决方案

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