NullReferenceException 在 System.Windows.Controls.Primitives.Popup.OnWindowResize(Object sender, AutoResizedEventArgs e) 在 System.Windows.Interop.HwndSource.Resize(Size newSize) 在 System.Windows.Interop.HwndSource.OnLayoutUpdated(Object obj, EventArgs args) 在 System.Windows.ContextLayoutManager.fireLayoutUpdateEvent() 在 System.Windows.ContextLayoutManager.UpdateLayout() 在 System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg) 在 System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks() 在 System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget) 在 System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget) 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) XamlParseException 设置属性“System.Windows.Setter.Property”时引发了异常。 在 System.Windows.Markup.XamlReader.RewrapException(Exception e, IXamlLineInfo lineInfo, Uri baseUri) 在 System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri) 在 System.Windows.ResourceDictionary.CreateObject(KeyRecord key) 在 System.Windows.ResourceDictionary.OnGettingValue(Object key, Object& value, Boolean& canCache) 在 System.Windows.ResourceDictionary.OnGettingValuePrivate(Object key, Object& value, Boolean& canCache) 在 System.Windows.ResourceDictionary.GetValueWithoutLock(Object key, Boolean& canCache) 在 System.Windows.ResourceDictionary.GetValue(Object key, Boolean& canCache) 在 System.Windows.FrameworkElement.FindResourceInTree(FrameworkElement feStart, FrameworkContentElement fceStart, DependencyProperty dp, Object resourceKey, Object unlinkedParent, Boolean allowDeferredResourceReference, Boolean mustReturnDeferredResourceReference, DependencyObject boundaryElement, InheritanceBehavior& inheritanceBehavior, Object& source) 在 System.Windows.FrameworkElement.FindResourceInternal(FrameworkElement fe, FrameworkContentElement fce, DependencyProperty dp, Object resourceKey, Object unlinkedParent, Boolean allowDeferredResourceReference, Boolean mustReturnDeferredResourceReference, DependencyObject boundaryElement, Boolean isImplicitStyleLookup, Object& source) 在 System.Windows.FrameworkElement.FindImplicitStyleResource(FrameworkElement fe, Object resourceKey, Object& source) 在 System.Windows.FrameworkElement.GetRawValue(DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry& entry) 在 System.Windows.FrameworkElement.EvaluateBaseValueCore(DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry& newEntry) 在 System.Windows.DependencyObject.EvaluateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry newEntry, OperationType operationType) 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.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue) 在 System.Windows.FrameworkElement.UpdateStyleProperty() 在 System.Windows.TreeWalkHelper.InvalidateOnTreeChange(FrameworkElement fe, FrameworkContentElement fce, DependencyObject parent, Boolean isAddOperation) 在 System.Windows.FrameworkElement.OnVisualParentChanged(DependencyObject oldParent) 在 System.Windows.Media.Visual.FireOnVisualParentChanged(DependencyObject oldParent) 在 System.Windows.Media.Visual.AddVisualChild(Visual child) 在 System.Windows.FrameworkElement.set_TemplateChild(UIElement value) 在 System.Windows.Controls.ContentPresenter.UseContentTemplate.BuildVisualTree(FrameworkElement container) 在 System.Windows.StyleHelper.ApplyTemplateContent(UncommonField`1 dataField, DependencyObject container, FrameworkElementFactory templateRoot, Int32 lastChildIndex, HybridDictionary childIndexFromChildID, FrameworkTemplate frameworkTemplate) 在 System.Windows.FrameworkTemplate.ApplyTemplateContent(UncommonField`1 templateDataField, FrameworkElement container) 在 System.Windows.FrameworkElement.ApplyTemplate() 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV) 在 System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged) 在 System.Windows.Controls.Grid.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Border.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Control.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.StackPanel.StackMeasureHelper(IStackMeasure measureElement, IStackMeasureScrollData scrollData, Size constraint) 在 System.Windows.Controls.StackPanel.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint) 在 System.Windows.Controls.ItemsPresenter.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint) 在 System.Windows.Controls.ScrollContentPresenter.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV) 在 System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged) 在 System.Windows.Controls.Grid.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.ScrollViewer.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Border.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Control.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Decorator.MeasureOverride(Size constraint) 在 System.Windows.Documents.AdornerDecorator.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Decorator.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Controls.Primitives.PopupRoot.MeasureOverride(Size constraint) 在 System.Windows.FrameworkElement.MeasureCore(Size availableSize) 在 System.Windows.UIElement.Measure(Size availableSize) 在 System.Windows.Interop.HwndSource.SetLayoutSize() 在 System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value) 在 System.Windows.Controls.Primitives.Popup.SetRootVisualToPopupRoot() 在 System.Windows.Controls.Primitives.Popup.CreateWindow(Boolean asyncCall) 在 System.Windows.Controls.Primitives.Popup.OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) 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.DependencyObject.SetValue(DependencyProperty dp, Object value) 在 System.Windows.Data.BindingOperations.SetBinding(DependencyObject target, DependencyProperty dp, BindingBase binding) 在 System.Windows.Controls.Primitives.Popup.CreateRootPopupInternal(Popup popup, UIElement child, Boolean bindTreatMousePlacementAsBottomProperty) 在 System.Windows.Controls.ContextMenu.HookupParentPopup() 在 System.Windows.Controls.ContextMenu.OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) 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.DependencyObject.SetCurrentValueInternal(DependencyProperty dp, Object value) 在 System.Windows.Controls.PopupControlService.RaiseContextMenuOpeningEvent(IInputElement source, Double x, Double y, Boolean userInitiated) 在 System.Windows.Controls.PopupControlService.ProcessMouseUp(Object sender, MouseButtonEventArgs e) 在 System.Windows.Controls.PopupControlService.OnPostProcessInput(Object sender, ProcessInputEventArgs e) 在 System.Windows.Input.InputManager.RaiseProcessInputEventHandlers(ProcessInputEventHandler postProcessInput, ProcessInputEventArgs processInputEventArgs) 在 System.Windows.Input.InputManager.ProcessStagingArea() 在 System.Windows.Input.InputManager.ProcessInput(InputEventArgs input) 在 System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport) 在 System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel) 在 System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled) 在 System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) 在 MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) 在 MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) 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) ArgumentNullException 值不能为 null。 参数名: property 在 System.Windows.Setter.CheckValidProperty(DependencyProperty property) 在 System.Windows.Baml2006.WpfSharedBamlSchemaContext.<>c.<Create_BamlProperty_Setter_Property>b__343_0(Object target, Object value) 在 MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)