Binding Annotations error

[Brendan]

I have a simple chart who's itemssource is bound to an object which works fine and refreshes accordingly when the object changes. I would like to bind the chart area annotations however whenever the bound itemssource object changes it throws an error. Is there a way to bind the annotations?

Example binding

Binding annotationBinding = new Binding();
KpiTrend.DefaultView.ChartArea.SetBinding(ChartArea.AnnotationsProperty, annotationBinding);

Object reference not set to an instance of an object.
   at Telerik.Windows.Controls.Charting.ChartArea.UpdateAnnotations()
   at Telerik.Windows.Controls.Charting.ChartArea.UpdateChart()
   at Telerik.Windows.Controls.Charting.ChartArea.OnDataSeriesCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.RadObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.ClearItems()
   at Telerik.Windows.Data.RadObservableCollection`1.ClearItems()
   at Telerik.Windows.Controls.Charting.RadHierarchicalObservableCollection`1.ClearItems()
   at System.Collections.ObjectModel.Collection`1.Clear()
   at Telerik.Windows.Controls.RadChart.ClearDataSeries()
   at Telerik.Windows.Controls.RadChart.Rebind(Object originalData)
   at Telerik.Windows.Controls.RadChart.ItemsSourcePropertyChanged(DependencyObject target, DependencyPropertyChangedEventArgs args)
   at Telerik.Windows.PropertyMetadata.<>c__DisplayClass1.<Create>b__0(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
   at System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
   at System.Windows.DependencyObject.RefreshExpression(DependencyProperty dp)
   at System.Windows.Data.BindingExpression.SendDataToTarget()
   at System.Windows.Data.BindingExpression.SourcePropertyChanged(PropertyPathListener sender, PropertyPathChangedEventArgs args)
   at System.Windows.PropertyPathListener.RaisePropertyPathStepChanged(PropertyPathStep source)
   at System.Windows.PropertyAccessPathStep.RaisePropertyPathStepChanged(PropertyListener source)
   at System.Windows.CLRPropertyListener.SourcePropertyChanged(Object sender, PropertyChangedEventArgs args)
   at System.Windows.Data.WeakPropertyChangedListener.PropertyChangedCallback(Object sender, PropertyChangedEventArgs args)
   at System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
   at DmDashboard.UI.Common.BindableObject.NotifyPropertyChanged(String name)
   at DmDashboard.UI.Module.Monitor.PresentationModels.TrendPresentationModel.set_Kpi(Kpi value)
   at DmDashboard.UI.Module.Monitor.Presenters.TrendPresenter.KpiSelected(Object obj)

[Nikolay]

Hello Brendan,

We haven't been able to reproduce this issue locally. Please, have a look at the attached sample application which demonstrates how to bind Annotations and also refreshes the source. If you still experience the same issue, please, open a support ticket and attach a modified version of this example or one that reproduces the issue on your side, so that our developers could investigate the cause.

Best wishes,
Nikolay
the Telerik team