KeyNotFoundException occurs when you assing the DisplayIndex of a tile group to a value bigger than the groups' count. For example, when you have 3 groups and set the DisplayIndex to 3 or more. If such situation occur it would be expected for the tile list to coerce the value to the closest available index. Similar to how the WPF native attached Grid.Row and Grid.Column properties work.
Exceptions message: KeyNotFoundException: 'The given key '0' was not present in the dictionary.'
System.Private.CoreLib.dll!System.ThrowHelper.ThrowKeyNotFoundException<int>(int key) Unknown
System.Private.CoreLib.dll!System.Collections.Generic.Dictionary<int, int>.this[int].get(int key) Unknown
> Telerik.Windows.Controls.dll!Telerik.Windows.Controls.RadTileList.InitializeGroupDisplayIndexes() Line 273 C#
Telerik.Windows.Controls.dll!Telerik.Windows.Controls.RadTileList.GenerateTileGroups(System.Collections.ObjectModel.ReadOnlyObservableCollection<object> groupsCollection) Line 300 C#
Telerik.Windows.Controls.dll!Telerik.Windows.Controls.RadTileList.AutoGenerateTiles() Line 690 C#
Telerik.Windows.Controls.dll!Telerik.Windows.Controls.RadTileList.ResetItemsOnItemsChanged() Line 650 C#
Telerik.Windows.Controls.dll!Telerik.Windows.Controls.RadTileList.OnItemsChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e) Line 616 C#
PresentationFramework.dll!System.Windows.Data.CollectionView.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs args) Unknown
WindowsBase.dll!System.Windows.WeakEventManager.ListenerList<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.DeliverEvent(object sender, System.EventArgs e, System.Type managerType) Unknown
WindowsBase.dll!System.Windows.WeakEventManager.DeliverEvent(object sender, System.EventArgs args) Unknown
PresentationFramework.dll!System.Windows.Data.CollectionView.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs args) Unknown
PresentationFramework.dll!System.Windows.Data.ListCollectionView.RefreshOverride() Unknown
PresentationFramework.dll!System.Windows.Data.CollectionView.RefreshInternal() Unknown
PresentationFramework.dll!System.Windows.Data.CollectionView.DeferHelper.Dispose() Unknown
PresentationFramework.dll!System.Windows.Controls.ItemCollection.SetCollectionView(System.Windows.Data.CollectionView view) Unknown
PresentationFramework.dll!System.Windows.Controls.ItemsControl.OnItemsSourceChanged(System.Windows.DependencyObject d, System.Windows.DependencyPropertyChangedEventArgs e) Unknown
PresentationFramework.dll!System.Windows.FrameworkElement.OnPropertyChanged(System.Windows.DependencyPropertyChangedEventArgs e) Unknown
WindowsBase.dll!System.Windows.DependencyObject.NotifyPropertyChange(System.Windows.DependencyPropertyChangedEventArgs args) Unknown
<
Style
BasedOn
=
"{StaticResource TileGroupContainerStyle}"
TargetType
=
"telerik:TileGroupContainer"
>
<
Style.Triggers
>
<
DataTrigger
Binding
=
"{Binding Items.Count}"
Value
=
"0"
>
<
Setter
Property
=
"ItemsSource"
Value
=
"{x:Null}"
/>
</
DataTrigger
>
</
Style.Triggers
>
</
Style
>
As a workaround you can apply the style explicitly or through an ItemContainerStyleSelector.
RadTileList: Memory leak when removing items from the collection of ItemsSource of the RadTileList and then change any property of any of the removed items. Available in LIB version: 2017.2.605
The horizontal scrollbar disappears setting RadTileList's background to black and when Windows8Touch theme is used. Declined: By default the ScrollBar's Thumb in Windows8Touch theme is transparent black and it is expected not to be visible on black background. For customization of the ScrollBar see attached project: 1. Extract the Style and Control Templates for the ScrollBar and its components from the System.Windows.xaml 2. Modify the HorizontalThumb and VerticalThumb's backgrounds to any color different from black - e.g. MainBrush, which is white in Windows8Thouch theme, change any needed opacities in the VisualStates 3. Apply the style globally for your application in App.xaml or only to the needed controls - in their <Control>.Resources (including all its needed resources)
If there is only one tile in a group and its Visibility property is set to Collapsed, the group header does not disappear.
The fix will be released with Q1 2016 offical version.
The problem should be resolved with lib version 2015.3.1026.
The fix will be available with Q2 2015.
Should be resolved with lib version 2014.3.1402.