Filter Click "Is Equal To" error

[Nick Wood]

Hi All

When I click on the drop down in the filter control in a column, I get the following error

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.0.30618; .NET CLR 3.5.30729; FDM; .NET4.0C; .NET4.0E)
Timestamp: Fri, 23 Apr 2010 03:21:59 UTC


Message: Unhandled Error in Silverlight Application
Code: 4004    
Category: ManagedRuntimeError       
Message: System.Windows.Markup.XamlParseException:  [Line: 0 Position: 0] ---> System.Windows.Markup.XamlParseException: The property 'System.Windows.Controls.Panel.Children' is set more than once. [Line: 725 Position: 36]
   at MS.Internal.XcpImports.MethodEx(IntPtr ptr, String name, CValue[] cvData)
   at MS.Internal.XcpImports.MethodEx(DependencyObject obj, String name)
   at MS.Internal.XcpImports.FrameworkElement_ApplyTemplate(FrameworkElement frameworkElement)
   at System.Windows.Controls.ItemContainerGenerator.LayoutStatesManager.GetElementRoot(Boolean templatesAreGenerated)
   at System.Windows.Controls.ItemContainerGenerator.LayoutStatesManager.Load()
   at System.Windows.Controls.ItemContainerGenerator.System.Windows.Controls.Primitives.IItemContainerGenerator.PrepareItemContainer(DependencyObject container)
   at System.Windows.Controls.ItemsControl.AddVisualChild(Int32 containerIndex, DependencyObject container, Boolean needPrepareContainer)
   at System.Windows.Controls.ItemsControl.AddContainers()
   at System.Windows.Controls.ItemsControl.RecreateVisualChildren(IntPtr unmanagedObj)
   --- End of inner exception stack trace ---
   at MS.Internal.XcpImports.MethodEx(IntPtr ptr, String name, CValue[] cvData)
   at MS.Internal.XcpImports.MethodEx(DependencyObject obj, String name)
   at MS.Internal.XcpImports.FrameworkElement_ApplyTemplate(FrameworkElement frameworkElement)
   at System.Windows.Controls.ScrollContentPresenter.HookupScrollingComponents()
   at System.Windows.Controls.ScrollContentPresenter.OnApplyTemplate()
   at System.Windows.FrameworkElement.OnApplyTemplate(IntPtr nativeTarget)     

Line: 56
Char: 13
Code: 0

[Vlad]

Hello,

Can you post some of our online examples where we can reproduce this?

Sincerely yours,
Vlad
the Telerik team

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[Nick Wood]

I am really  not sure what occured here. It was after I updated to the new telerik Silverlight 4 controls. I then did a clean and rebuild and the issue does not happen any more.