[Solved] Q2-SL2-Duplicate Key Detected

[Barry Hester]

<tGrid:RadGridView x:Name="gResults" Grid.Row="1" AutoGenerateColumns="False" IsReadOnly="True" MultipleSelect="True">
            <tGrid:RadGridView.RowStyle>
                <Style TargetType="tGridElements:GridViewRow">

                    <Setter Property="dragDrop:RadDragAndDropManager.AllowDrag"
                            Value="True" />

                </Style>
            </tGrid:RadGridView.RowStyle>
            <tGrid:RadGridView.AlternateRowStyle>
                <Style TargetType="tGridElements:GridViewRow">

                    <Setter Property="dragDrop:RadDragAndDropManager.AllowDrag"
                            Value="True" />

                </Style>
            </tGrid:RadGridView.AlternateRowStyle>
        <columns, etc/>
</tGrid:RadGridView>

Hello,

I know that someone else was having issues with Q2 SL3 and the "duplicate key detected" error.  However, I am using Q2 SL2.  The error is thrown when the grid is bound.  However it does not happen all the time.  Only certain result sets cause the error.  I am unable to determine what makes the "offending" result sets different.  The application stops working when this happens.  Is this a known issue?  If so, are there any plans to fix it?  This is critical for my application, so any interim workarounds or suggestions would be most helpful as well.  

I have included the gridview setup as well as the error...

Thanks!

Webpage error details

User Agent: 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; InfoPath.2)
Timestamp: Thu, 30 Jul 2009 17:16:00 UTC


Message: Sys.InvalidOperationException: ManagedRuntimeError error #4004 in control 'Xaml1': System.ArgumentException: Duplicate key detected!
Parameter name: key
   at Telerik.Windows.Controls.GridView.GridView.Scrolling.RadKeyedCollection`2.AddKey(TKey key, Int32 index)
   at Telerik.Windows.Controls.GridView.GridView.Scrolling.RadKeyedCollection`2.InsertItem(Int32 index, TItem item)
   at System.Collections.ObjectModel.Collection`1.Add(T item)
   at Telerik.Windows.Controls.GridView.GridView.Scrolling.PhysicalHeightsCache.CreateDataRecordsHeightsCache(IList`1 records, Double rowHeight, Int32 firstIndexInGroup, Int32 grIndex)
   at Telerik.Windows.Controls.GridView.GridView.Scrolling.PhysicalHeightsCache.RefreshItemsPhysicalHeightsCache()
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.OnRefreshScrollExtent()
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.UpdateRowHeight(IRowItem child)
   at Telerik.Windows.Controls.GridView.BaseVirtualizingPanel.MeasureOverride(Size availableSize)
   at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
Line: 453
Char: 17
Code: 0
URI: http://localhost/ScriptResource.axd?d=-FbhHIhQXWtMvuYF0Uz-T0sNy2WEGlN3Ie9X35Ndw6lwkuW9qHf6DcRwQwnNiaOKmE-OszYxBdQkGtbYkLjPdA2&t=ffffffffafbd6209

[Vlad]

Hi Barry,

The issue is already fixed and the fix will be part of our service pack (next week).

Regards,
Vlad
the Telerik team

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[Barry Hester]

I look forward to getting the bits.

Thank you very much!