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Stefan
705
ValueOverlay Tooltip Binding error
posted

I have following situation:
A XamDataChart with a column series and a value overlay.
Both of them have an own tooltip assigned.

If I now hover at first over the column and then over the value overlay,
I get this binding error:
System.Windows.Data Error: 40 : BindingExpression path error: 'ActualMarkerTemplate' property not found on 'object' ''ValueOverlay' (Name='')'. BindingExpression:Path=Series.ActualMarkerTemplate; DataItem='DataContext' (HashCode=5270802); target element is 'ContentPresenter' (Name=''); target property is 'ContentTemplate' (type 'DataTemplate')

I think this could be a bug.

I've attached the sample, so you can prove it.

ChartTest.zip
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  • 138253
    Verified Answer
    Offline posted

    Hello,

     

    After some research our developers said that when the object being bound changes from Column to ValueOverlay the Properties are changing and WPF's binding engine cannot find one of them and reports it and that this is a WPF behavior.

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