Exception:高度必须为非负值。

报错信息

ArgumentException
   在 System.Windows.Rect.set_Height(Double value)
   在 System.Windows.Controls.VirtualizingStackPanel.ExtendViewport(IHierarchicalVirtualizationAndScrollInfo virtualizationInfoProvider, Boolean isHorizontal, Rect viewport, VirtualizationCacheLength cacheLength, VirtualizationCacheLengthUnit cacheUnit, Size stackPixelSizeInCacheBeforeViewport, Size stackLogicalSizeInCacheBeforeViewport, Size stackPixelSizeInCacheAfterViewport, Size stackLogicalSizeInCacheAfterViewport, Size stackPixelSize, Size stackLogicalSize, Int32& itemsInExtendedViewportCount)
   在 System.Windows.Controls.VirtualizingStackPanel.IsExtendedViewportFull()
   在 System.Windows.Controls.VirtualizingStackPanel.ShouldItemsChangeAffectLayoutCore(Boolean areItemChangesLocal, ItemsChangedEventArgs args)
   在 System.Windows.Controls.VirtualizingPanel.OnItemsChangedInternal(Object sender, ItemsChangedEventArgs args)
   在 System.Windows.Controls.Panel.OnItemsChanged(Object sender, ItemsChangedEventArgs args)
   在 System.Windows.Controls.ItemContainerGenerator.OnItemAdded(Object item, Int32 index, NotifyCollectionChangedEventArgs collectionChangedArgs)
   在 System.Windows.Controls.ItemContainerGenerator.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)
   在 System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
   在 System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
   在 System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   在 System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   在 System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
   在 System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)
   在 System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   在 System.Windows.Controls.ItemCollection.Insert(Int32 insertIndex, Object insertItem)
   在 PropertyTools.Wpf.TreeListBox.InsertItem(Int32 index, Object item, Object parent)
   在 PropertyTools.Wpf.TreeListBox.InsertItems(Object parent, IList newItems, Int32 newStartingIndex)
   在 PropertyTools.Wpf.TreeListBox.Expand(Object item)
   在 System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   在 System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   在 System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   在 System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   在 System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   在 System.Windows.Data.BindingOperations.SetBinding(DependencyObject target, DependencyProperty dp, BindingBase binding)
   在 PropertyTools.Wpf.TreeListBox.PrepareContainerForItemOverride(DependencyObject element, Object item)
   在 System.Windows.Controls.ItemsControl.MS.Internal.Controls.IGeneratorHost.PrepareItemContainer(DependencyObject container, Object item)
   在 System.Windows.Controls.VirtualizingStackPanel.InsertContainer(Int32 childIndex, UIElement container, Boolean isRecycled)
   在 System.Windows.Controls.VirtualizingStackPanel.AddContainerFromGenerator(Int32 childIndex, UIElement child, Boolean newlyRealized, Boolean isBeforeViewport)
   在 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, Int64& scrollGeneration, 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 isAncestorLookingForFirstItem, Boolean& hasBringIntoViewContainerBeenMeasured, Boolean& hasVirtualizingChildren)
   在 System.Windows.Controls.VirtualizingStackPanel.MeasureOverrideImpl(Size constraint, Nullable`1& lastPageSafeOffset, List`1& previouslyMeasuredOffsets, Nullable`1& lastPagePixelSize, Boolean remeasure)
   在 System.Windows.Controls.VirtualizingStackPanel.MeasureOverride(Size constraint)
   在 System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   在 System.Windows.UIElement.Measure(Size availableSize)
   在 System.Windows.ContextLayoutManager.UpdateLayout()
   在 System.Windows.Controls.VirtualizingStackPanel.<>c__DisplayClass97_0.<InitializeViewport>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, Delegate catchHandler) 

解决方法

暂无解决方案。

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