Hi,
I have a question for RadDropDownButton and Modal window in XBAP model. If you click the dropdown item of RadDropDownButton, it will popup the modal window (ShowDialog), but the DropDownContent doesn't disappear and it is on top of the ModalBackground. If you click the other place, the DropDownContent disappears. I want to know how can i resolve it?



Thanks,
Ted.

Occasionally, our application crashes shortly after the following exception is record in the log:

08/25/2011 16:00:56.140 FATAL System.ArgumentException: An item with the same key has already been added.
I will include the full stack trace below.

It seems to happen after new items are added to the observable collection that is data bound to the grid, or after properties of items in the grid change, or after a user sorts or groups the grid. I suspect (but am not sure) that the problem is that our entities displayed in the grid have an incorrect overloaded GetHashCode method - the return value of the GetHashCode method may change for a given entity while it is in the collection. We intend to fix this, but the grid should not crash when encountering this situation.

My question is, how can I trap for this type of exception in the RadGridView? I am using MVVM, and the RadGridView is declared in XAML. 

Using version 2010.3.1314.35

Thanks
Chris

08/25/2011 16:00:56.140 FATAL System.ArgumentException: An item with the same key has already been added.
   at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at System.Collections.Generic.Dictionary`2..ctor(IDictionary`2 dictionary, IEqualityComparer`1 comparer)
   at Telerik.Windows.Data.Selection.InternalSelectionItemsStorage..ctor(InternalSelectionItemsStorage itemsStorage) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Data\Selection\InternalSelectionItemsStorage.cs:line 16
   at Telerik.Windows.Data.Selection.ItemSelectionHandler.BeginSelection() in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Data\Selection\ItemSelectionHandler.cs:line 571
   at Telerik.Windows.Controls.DataControl.PersistIsCurrentPropertry(RadRowItem container, Object dataItem) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Core\Data\DataControl.Selection.cs:line 426
   at Telerik.Windows.Controls.GridView.GridViewDataControl.PrepareContainerForItemOverride(DependencyObject element, Object item) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.cs:line 7573
   at Telerik.Windows.Controls.GridView.BaseItemsControl.Telerik.Windows.Controls.GridView.IGeneratorHost.PrepareItemContainer(DependencyObject container, Object item) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\ItemsControl\BaseItemsControl.cs:line 336
   at Telerik.Windows.Controls.GridView.GridViewItemContainerGenerator.System.Windows.Controls.Primitives.IItemContainerGenerator.PrepareItemContainer(DependencyObject container) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\ItemsControl\GridViewItemContainerGenerator.cs:line 260
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.InsertContainer(Int32 childIndex, UIElement container, Boolean isRecycled) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 2067
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.AddContainerFromGenerator(Int32 childIndex, UIElement child, Boolean newlyRealized) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 2114
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size constraint) in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 1215
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   at System.Windows.Controls.ScrollContentPresenter.MeasureOverride(Size constraint)
   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.Controls.ScrollViewer.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.ContextLayoutManager.UpdateLayoutCallback(Object arg)
   at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()
   at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)

I am using a GridViewCheckBoxColumn. My requirement is i will hide the checkbox in each row if binded value lavel is 6. I had used one Cell Style Selector. If i make the visibility=Collapsed then the cell as well as cell border is also not displayed and looking odd. Please help me how i will be able to collapse few cells based on above condition with the only checkbox collapsed and border remain as it is

public

 

class CustomVisibilityStyle : StyleSelector

 

{

 

public override Style SelectStyle(object item, DependencyObject container)

 

{

 

PeopleDataDC ppl = item as PeopleDataDC;

 

 

if (ppl.Level == 6)

 

{

 

return VisibleStyle;

 

}

 

else

 

{

//((System.Windows.Controls.

ContentPresenter)(((System.Windows.Controls.Grid)(((Telerik.Windows.Controls.GridView.GridViewCell)(container)).Template.LoadContent())).Children[7])).Visibility = Visibility.Collapsed;

 

 

return CollapsedStyle;

 

}

 

return CollapsedStyle;

 

}

 

public Style VisibleStyle { get; set; }

 

 

public Style CollapsedStyle { get; set; }

 

}

Hi,

i have a radtreeview filled with hierarchicaldata. In code i do the settings.

            _radTreeView = projectTreeView._xTreeView;
            _radTreeView.AllowDrop = true;

            _radTreeView.Drop += TreeViewDrop;
            _radTreeView.PreviewDrop += TreeViewPreviewDrop;
            _radTreeView.DragOver += ....

If i drop an item the dropevent doesnt fire. Temporarily i solved this and work with the previewdropevent. But i dont like this solution. Have anyone ideas where my problem is? Some points that i must check?

Thanks
Annett

hi..
Please tell me how to binding ImageSource as DataMemberBinding of GridViewImageColumn. 

i am try this.But it`s not working.

public ImageSource  myimage { get;set;}

<telerik:GridViewImageColumn x:Name="InsatllmentCustomerViewImage" UniqueName="Image" Header="Pictute" TextAlignment="Center" Width="100" HeaderTextAlignment="Center" ImageHeight="40" ImageWidth="40"  DataMemberBinding="{Binding myimage 
, ElementName=window}"/>

Please provide a perfect example.

thank `s  for help

Hello

Does any body know how to add shortcut to RadMenuItem, for example  <New          "Ctrl+Shift+N">? As i see there no out of the box solution?

Thanks in advance.

Hi, I have the following style set in my global resource dictionary but it is not being applied to the ScheduleView control since I upgraded to the 2010.3.1314.35 binaries. Used to work fine with version 2010.3.1110. Could someone please explain what the cause of this problem might be? I'm using the StringFormat on the binding to output just the day portion of the date but actually the whole date ('17-02-2011') is being output.

<Style x:Key="TimeRulerGroupItemBaseStyle" TargetType="scheduleView:TimeRulerItemBase">
        <Setter Property="Foreground" Value="{StaticResource RadScheduleForeground}" />
        <Setter Property="Background" Value="{StaticResource GroupHeaderHeaderBackground}" />
        <Setter Property="BorderBrush" Value="{StaticResource GroupHeaderHeaderOuterBorder}" />
        <Setter Property="BorderThickness" Value="1" />
        <Setter Property="HorizontalContentAlignment" Value="Center" />
        <Setter Property="VerticalContentAlignment" Value="Top" />
        <Setter Property="ContentTemplate">
            <Setter.Value>
                <DataTemplate>
                    <TextBlock Padding="0 3" Text="{Binding DateTime, StringFormat='dd'}" />
                </DataTemplate>
            </Setter.Value>
        </Setter>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="scheduleView:TimeRulerItemBase">
                    <Grid>
                        <Border x:Name="HeaderVisual" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
                            <Border BorderBrush="{StaticResource GroupHeaderHeaderInnerBorder}" BorderThickness="1" />
                        </Border>
                        <ContentPresenter Margin="0" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                          VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

<Style TargetType="scheduleView:TimeRulerGroupItem" BasedOn="{StaticResource TimeRulerGroupItemBaseStyle}" />

Thanks,
Peter.

When I group on a column and then sort to another column, I get this message..
But if I do the other way (sort and then group) no message ????

Any clues  ?????

Unable to cast object of type 'Maximum.Edm.Scale.Ticket' to type 'Telerik.Windows.Data.IGroup'.   at

Telerik.Windows.Data.FuncExtensions.<>c__DisplayClass1`2.<ToUntypedFunc>b__0(Object item)
   at Telerik.Windows.Data.KeyedCollection.GetKeyByItem(Object value)
   at Telerik.Windows.Data.KeyedCollection.IndexOf(Object value)
   at Telerik.Windows.Data.QueryableCollectionView.InternalIndexOf(Object item)
   at Telerik.Windows.Data.QueryableCollectionView.IndexOf(Object item)
   at Telerik.Windows.Data.DataItemCollection.IndexOf(Object value)
   at Telerik.Windows.Controls.GridView.Selection.CellRegionsPartitioner.GetFirstAndLastIndices(IList`1 items)
   at Telerik.Windows.Controls.GridView.Selection.CellRegionsPartitioner.CalculateAffectedRegions()
   at Telerik.Windows.Controls.GridView.Selection.CompositeSelectionHandler.UpdateSelectedCells(IList`1 items, Boolean isSelected)
   at Telerik.Windows.Controls.GridView.Selection.CompositeSelectionHandler.Items_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.DataItemCollection.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.DataItemCollection.OnCollectionViewCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.DataItemCollection.Telerik.Windows.Data.IWeakEventListener<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.ReceiveWeakEvent(Object sender, NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
   at Telerik.Windows.Data.QueryableCollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   at Telerik.Windows.Data.QueryableCollectionView.RefreshOverride()
   at Telerik.Windows.Data.QueryableCollectionView.RefreshOrDefer()
   at Telerik.Windows.Data.QueryableCollectionView.InvalidatePagingAndRefresh()
   at Telerik.Windows.Data.QueryableCollectionView.OnSortDescriptorsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.ObservableItemCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.RadObservableCollection`1.ResumeNotifications()
   at Telerik.Windows.Data.CollectionHelper.Reset(IEnumerable source, IList target, Func`2 itemConverter)
   at Telerik.Windows.Data.ObservableCollectionManager.HandleCollectionChanged(IList sender, NotifyCollectionChangedEventArgs args)
   at Telerik.Windows.Data.ObservableCollectionManager.Telerik.Windows.Data.IWeakEventListener<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.ReceiveWeakEvent(Object sender, NotifyCollectionChangedEventArgs args)
   at Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.ObservableItemCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.RadObservableCollection`1.ResumeNotifications()
   at Telerik.Windows.Controls.GridView.GridViewDataControl.PerformSorting(GridViewSortingEventArgs sortingArgs)
   at Telerik.Windows.Controls.GridView.GridViewDataControl.<>c__DisplayClass74.<Sort>b__73()
   at Telerik.Windows.Controls.CursorManager.PerformTimeConsumingOperation(FrameworkElement frameworkElement, Action action)
   at Telerik.Windows.Controls.GridView.GridViewDataControl.Sort(GridViewColumn column, Boolean appendToExisting)
   at Telerik.Windows.Controls.GridView.GridViewHeaderCell.RequestSort(Boolean appendToExisting)
   at Telerik.Windows.Controls.GridView.GridViewHeaderCell.OnMouseLeftButtonUp(MouseButtonEventArgs e)
   at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

hi,
I am using the following code in aspx.cs and aspx page to turn off/on the filetring of radgrid, but its working the vice-versa. When I click on FilterOn button, filters hide and when I click on FilterOff button, filters show up. Thanks in advance.

Hey,
I've got strange issues with SelectedItem Binding of the Carousel, I believe it is due to virtualization, as when an item is visible somewhere along the rendered items, I am able to "jump" to the card of the item when I'm manipulating the SelectedItem binding.
if it's not visible than nothing is happening.

If I am correct with my assumption, how do I disable virtualization assuming this is what I need to do :)

Thanks
Ariel