System.Windows.Data Error 40 when removing nodes?

[Kristoffer]

public override bool RemoveItem(FilterNode node)
{
    return base.RemoveItem(node); // This method call produces the error output below
}

System.Windows.Data Error: 40 : BindingExpression path error: 'Visibility' property not found on 'object' ''DiagramViewModel' (HashCode=33233561)'. BindingExpression:Path=Visibility; DataItem='DiagramViewModel' (HashCode=33233561); target element is 'MyChartShape' (Name=''); target property is 'Visibility' (type 'Visibility')
System.Windows.Data Error: 40 : BindingExpression path error: 'IsSelected' property not found on 'object' ''DiagramViewModel' (HashCode=33233561)'. BindingExpression:Path=IsSelected; DataItem='DiagramViewModel' (HashCode=33233561); target element is 'MyChartShape' (Name=''); target property is 'IsSelected' (type 'Boolean')

I have a shape style that does some binding:

<Style TargetType="views:MyChartShape" x:Key="MyShapeStyle">
        <Setter Property="Visibility" Value="{Binding Visibility, Mode=TwoWay}" />
        <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />


Probably not critical, but I believe these errors could indicate a performance issue. The node's shape is obviously rendered when it has been removed (along with its DataContext).

[Tina Stancheva]

Hi Kristoffer,

These issues indicate databinding problems but I wasn't able to reproduce them locally. Do you think you can try to isolate this part of your application and send a sample solution reproducing these exceptions? This will allow us to further investigate them and suggest a solution.

Thank you in advance for your cooperation.

All the best,
Tina Stancheva
the Telerik team