Unhandled Error : RadControls For Silverlight 2010. Q2

[Kakid]

Hi,
I'm using Telerik RadControls For Silverlight 2010. Q2, and I have a similar error , for an unhandled Error when I try to group my data in a radGrid, the grid is bind to data sources via RIA service and contain simple data (not templated column) , the grid work fine the first time I use it, but since yesterday all the grid I have in my project throw the same error when I try to Group.

Détails de l’erreur de la page Web

Agent utilisateur : Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)
Horodateur : Tue, 20 Jul 2010 07:52:07 UTC


Message : Unhandled Error in Silverlight Application
Code: 4004    
Category: ManagedRuntimeError       
Message: System.ArgumentException: La valeur n'est pas comprise dans la plage attendue.
   à MS.Internal.XcpImports.MethodEx(IntPtr ptr, String name, CValue[] cvData)
   à MS.Internal.XcpImports.MethodPack(IntPtr objectPtr, String methodName, Object[] rawData)
   à MS.Internal.XcpImports.UIElement_TransformToVisual(UIElement element, UIElement visual)
   à System.Windows.UIElement.TransformToVisual(UIElement visual)
   à Telerik.Windows.Controls.ApplicationHelper.TransformToScreenRoot(UIElement target)
   à Telerik.Windows.Controls.VisualTreeHelperExtensions.GetElementsInHostCoordinates[T](UIElement subtree, Point position)
   à Telerik.Windows.Controls.GridView.GridViewHeaderCell.CanBeginDrag(DragDropQueryEventArgs e)
   à Telerik.Windows.Controls.GridView.GridViewHeaderCell.OnDragQuery(Object sender, DragDropQueryEventArgs e)
   à Telerik.Windows.Controls.DragDrop.DragDropQueryEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   à Telerik.Windows.RadRoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   à Telerik.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RadRoutedEventArgs routedEventArgs)
   à Telerik.Windows.RouteItem.InvokeHandler(RadRoutedEventArgs routedEventArgs)
   à Telerik.Windows.EventRoute.InvokeHandlersImpl(Object source, RadRoutedEventArgs args, Boolean raisedAgain)
   à Telerik.Windows.EventRoute.InvokeHandlers(Object source, RadRoutedEventArgs args)
   à Telerik.Windows.RadRoutedEventHelper.RaiseEvent(DependencyObject element, RadRoutedEventArgs args)
   à Telerik.Windows.DependencyObjectExtensions.RaiseEvent(DependencyObject element, RadRoutedEventArgs e)
   à Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.RaiseDragQuery()
   à Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.TryStartDrag(IMouseEventArgs e)
   à Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.OnTrackedElementMouseMoveInternal(IMouseEventArgs e)
   à Telerik.Windows.Controls.DragDrop.RadDragAndDropManager.OnTrackedElementMouseMove(Object sender, MouseEventArgs e)
   à MS.Internal.CoreInvokeHandler.InvokeEventHandler(Int32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   à MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, String eventName)     

Ligne : 56
Caractère : 13
Code : 0

Can you please help me to find a solution ?
Thank you

[Kakid]

After investigation, it's seen to be a regression after upgrading from Q1 to Q2 , the error appear when we use the GridView in child window and we try to group data into it the grid.

[Tsvyatko]

Hi Kakid,

We have found that drag and drop functionality has issue when grid is placed within child window or popup. This issue  has being fixed and will be included in our next internal build.
 Please excuse us for inconvenience caused.

Kind regards,
Tsvyatko
the Telerik team