InvalidWrapperException after programmatically deleting ISimNode

.Net Add-on Programming
1

We use a reference robotic cell from which we delete certain elements to generate various cell configurations. However, after generating the cell the 3D viewport becomes unuseable with the following call stack:

Unhandled exception occurred:VisualComponents.Create3D.InvalidWrapperException: Wrapper being used has been invalidated.
   at VisualComponents.Revolution.TextFeatureWrapper.get_IsFloating()
   at System.Linq.Enumerable.WhereListIterator`1.MoveNext()
   at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source)
   at VisualComponents.UX.Shared.FloatingPositionHelper.UpdatePositionsAll()
   at System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
   at VisualComponents.Revolution.CameraWrapper.raise_PropertyChanged(Object value0, PropertyChangedEventArgs value1)
   at VisualComponents.Revolution.CameraWrapper.Rotate(Point lastPoint, Point currentPoint)
   at VisualComponents.UX.Input.RotateHandler.Delta(ManipulationEventArgs e)
   at VisualComponents.UX.Input.MouseGestureHandler.OnMouseMove(Object sender, MouseEventArgs e)
   at VisualComponents.UX.Input.HelperViewport.OnMouseMove(Object sender, MouseEventArgs e)
// shortened call stack

The code that deletes the nodes looks like this:

if (Component.FindNode(nodeName) is ISimNode nodeToDelete)
{
    nodeToDelete.Delete();
}

Are there some extra steps that are missing to ensure the nodes are safely deleted?

2

Are you using a very old version of VC? I think that exception was fixed around year 2020.

3

We’re on 4.2, I’m not sure we’re planning on updating anytime soon.

4

So I’ve tried our tool on VC4.9.2 and the issue is indeed fixed, thanks!