[Solved] InvalidOperationException when removing an item from ObservableCollection bound to a RadDataGrid

[Markus]

Hello,

upon removing an item from an ObservableCollection that is bound to the ItemsSource of a RadDataGrid, I get an InvalidOperationException with the following stacktrace.

System.InvalidOperationException
   at System.Linq.Enumerable.Last[TSource](IEnumerable`1 source)
   at Telerik.UI.Xaml.Controls.Grid.NodePool`1.GenerateContainer(IList`1 itemInfos)
   at Telerik.UI.Xaml.Controls.Grid.NodePool`1.GenerateBottomBufferItems(Int32 startGenerateIndex, Double viewportLength)
   at Telerik.UI.Xaml.Controls.Grid.NodePool`1.OnMeasure(RadSize availableSize, Double offset)
   at Telerik.UI.Xaml.Controls.Grid.GridModel.MeasureCells(RadSize newAvailableSize)
   at Telerik.UI.Xaml.Controls.Grid.RadDataGrid.OnCellsPanelMeasure(RadSize newAvailableSize)
   at Telerik.UI.Xaml.Controls.Grid.Primitives.DataGridCellsPanel.MeasureOverride(Size availableSize)

Whether the item is selected or not makes no difference.

Is there a workaround?

EDIT: Ok, the workaround is to replace the entire list with a new one after removing the desired item.

So will there be a fix for this any time soon (maybe in the Q2 release)?

[Ivaylo Gergov]

Hello Markus,

Thank you for contacting us.

Indeed we are aware of this issue and it is already fixed in our latest internal build (you can download it from your client account -> Manage Products -> Latest internal builds). The fix will also be included in our official Q1 2013 SP1 release later this week.

I hope this information helps.

 

Kind regards,
Ivaylo Gergov
the Telerik team