宽度和高度必须为非负值。
at System.Windows.Rect..ctor(Double x, Double y, Double width, Double height)
at Syncfusion.UI.Xaml.CellGrid.VirtualizingRowPanel.ArrangeItems(Size finalSize)
at Syncfusion.UI.Xaml.CellGrid.VirtualizingRowPanel.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at Syncfusion.UI.Xaml.CellGrid.VisualContainer.ArrangeRows()
at Syncfusion.UI.Xaml.CellGrid.ScrollableChildFrame.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at Syncfusion.UI.Xaml.Spreadsheet.VisualContainerExt.ArrangeChildPanels(Rect rect)
at Syncfusion.UI.Xaml.CellGrid.VisualContainer.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.ContextLayoutManager.UpdateLayout()
at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)