Index was out of range. Must be non-negative and less than the size of the collection.

[nuno]

Hello i am geting this excpetion when i am populating sheduleview from db. It is possible to bind a list with more than 250 or 300 appointments?  
Because I am getting this exception.
 
at System.ThrowHelper.ThrowArgumentOutOfRangeException()
   at System.Collections.Generic.List`1.get_Item(Int32 index)
   at Telerik.Windows.Controls.AppointmentsHelper.SplitToColumns(AppointmentSlotGroupInfo groupInfo, Boolean roundAppointmentDurationToDay) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Helpers\AppointmentsHelper.cs:line 330
   at Telerik.Windows.Controls.GroupHeader.CalculateAppointmentItemRenderRectangle() in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\GroupHeader.cs:line 565
   at Telerik.Windows.Controls.GroupHeader.set_CalculatedChildrenLength(Double value) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\GroupHeader.cs:line 200
   at Telerik.Windows.Controls.GroupHeader.SetAvailableLength(Double availableLength, Boolean isHorizontal) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\GroupHeader.cs:line 459
   at Telerik.Windows.Controls.AppointmentsPanel.UpdateHeaderAvailableSize(List`1 headers, Boolean isHorizontal, Double availableLength, Boolean initialize, Boolean updateDesiredLengthForLevel) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\AppointmentsPanel.cs:line 617
   at Telerik.Windows.Controls.AppointmentsPanel.MeasureOverride(Size availableSize) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\AppointmentsPanel.cs:line 139
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.ContextLayoutManager.UpdateLayout()
   at System.Windows.UIElement.UpdateLayout()
   at Telerik.Windows.Media.Imaging.ExportHelper.GetBitmapSource(FrameworkElement element, Double dpiX, Double dpiY) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Core\Controls\ExportExtensions\ExportHelper.cs:line 85
   at Telerik.Windows.Media.Imaging.ExportHelper.GetElementImage(FrameworkElement element) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Core\Controls\ExportExtensions\ExportHelper.cs:line 63
   at Telerik.Windows.Controls.TransitionControl.TransitionPresenter.PrepareAnimation() in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Core\Controls\TransitionControl\TransitionPresenter.cs:line 341
   at Telerik.Windows.Controls.TransitionControl.TransitionPresenter.ChangeContent() in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Core\Controls\TransitionControl\TransitionPresenter.cs:line 426
   at Telerik.Windows.Controls.TransitionControl.TransitionPresenter.OnContentChange(DependencyObject d, DependencyPropertyChangedEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Core\Controls\TransitionControl\TransitionPresenter.cs:line 381
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at Telerik.Windows.Controls.TransitionControl.TransitionPresenter.set_CurrentContent(Object value) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Core\Controls\TransitionControl\TransitionPresenter.cs:line 161
   at Telerik.Windows.Controls.RadTransitionControl.OnContentChanged(Object oldContent, Object newContent) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Core\Controls\TransitionControl\RadTransitionControl.cs:line 168
   at System.Windows.Controls.ContentControl.OnContentChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp)
   at System.Windows.StyleHelper.InvalidateDependents(Style ownerStyle, FrameworkTemplate frameworkTemplate, DependencyObject container, DependencyProperty dp, FrugalStructList`1& dependents, Boolean invalidateOnlyContainer)
   at System.Windows.StyleHelper.OnTriggerSourcePropertyInvalidated(Style ownerStyle, FrameworkTemplate frameworkTemplate, DependencyObject container, DependencyProperty dp, DependencyPropertyChangedEventArgs changedArgs, Boolean invalidateOnlyContainer, FrugalStructList`1& triggerSourceRecordFromChildIndex, FrugalMap& propertyTriggersWithActions, Int32 sourceChildIndex)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyPropertyKey key, Object value)
   at Telerik.Windows.Controls.RadScheduleView.set_CurrentVisibleRangeText(String value) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\RadScheduleView.cs:line 94
   at Telerik.Windows.Controls.RadScheduleView.UpdateCurrentVisibleRangeText() in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\RadScheduleView.cs:line 136
   at Telerik.Windows.Controls.RadScheduleView.UpdateVisibleRange() in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\RadScheduleView.cs:line 178
   at Telerik.Windows.Controls.ScheduleViewBase.OnCurrentDatePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q3\Sources\Development\Controls\ScheduleView\ScheduleView\Controls\ScheduleView.cs:line 2719
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at MS.Internal.Data.PropertyPathWorker.SetValue(Object item, Object value)
   at MS.Internal.Data.ClrBindingWorker.UpdateValue(Object value)
   at System.Windows.Data.BindingExpression.UpdateSource(Object value)

[Boyan]

Hi Nuno Cruz,

Yes, It is possible to bind more than 300 appointments. However I can't figure out what might be the problem from the StackTrace. Could you please send us a code snippet how you are populating the RadScheduleView. It will be of great help for us to be able to localize the problem.

All the best,
Boyan
the Telerik team