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Exception: ArgumentOutOfRangeException in RadSparkline

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Jerome
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Jerome asked on 13 Nov 2012, 07:51 AM
I am binding a RadSparkline against an INotifyCollectionChanged object. This object is NOT an ObservableCollection<>. It is raising CollectionChanged, with Action: Add, with StartingIndex as -1. This should be allowed when the collection is unordered, as mine is. However, RadSparkline is throwing an exception:

ArgumentOutOfRangeException Index must be within the bounds of the List.
   at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
   at System.Collections.Generic.List`1.Insert(Int32 index, T item)
   at Telerik.Windows.Controls.ProjectedView`1.ObservableSourceListCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\DataVisualization\Common\DataProjection\ProjectedView.cs:line 179

I am going to solve this problem by making a temporary ObservableCollection, and adding new items to the end of it as they arrive. However, this should not be required.

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Tsvetie
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answered on 19 Nov 2012, 12:38 PM
Hello Jerome,

I was able to reproduce the problem and forwarded it to our developers. For the time being, as a workaround, you can raise the CollectionChanged event with Action: Add and StartingIntex: the length of the collection minus one.

I updated your Telerik points for bringing the problem to our attention.

Regards,
Tsvetie
the Telerik team

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